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12202131020020 = 2251240214919381
BaseRepresentation
bin1011000110010000011110…
…1011110101100011110100
31121012111211111020211012021
42301210013223311203310
53044404431020120040
641541325343202524
72366401116230614
oct261440753654364
947174744224167
1012202131020020
113984992940977
121450a30ba6444
136a686b36ac46
1430282cb02a44
151626134d824a
hexb1907af58f4

12202131020020 has 24 divisors (see below), whose sum is σ = 25624686964968. Its totient is φ = 4880812060800.

The previous prime is 12202131020003. The next prime is 12202131020047. The reversal of 12202131020020 is 2002013120221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2751597534436 + 9450533485584 = 1658794^2 + 3074172^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12202131019976 and 12202131020003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20730 + ... + 4940110.

It is an arithmetic number, because the mean of its divisors is an integer number (1067695290207).

Almost surely, 212202131020020 is an apocalyptic number.

12202131020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12202131020020 is an abundant number, since it is smaller than the sum of its proper divisors (13422555944948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12202131020020 is a wasteful number, since it uses less digits than its factorization.

12202131020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5043411 (or 5043409 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12202131020020 its reverse (2002013120221), we get a palindrome (14204144140241).

The spelling of 12202131020020 in words is "twelve trillion, two hundred two billion, one hundred thirty-one million, twenty thousand, twenty".

Divisors: 1 2 4 5 10 20 124021 248042 496084 620105 1240210 2480420 4919381 9838762 19677524 24596905 49193810 98387620 610106551001 1220213102002 2440426204004 3050532755005 6101065510010 12202131020020