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122312030020 = 2256115601501
BaseRepresentation
bin111000111101001011…
…1010111011101000100
3102200201010122220102221
41301322113113131010
54000443334430040
6132104523142124
711560002046465
oct1617227273504
9380633586387
10122312030020
1147965a52534
121b856074944
13b6c31b207b
145cc4426d6c
1532ace5174a
hex1c7a5d7744

122312030020 has 12 divisors (see below), whose sum is σ = 256855263084. Its totient is φ = 48924812000.

The previous prime is 122312029969. The next prime is 122312030033. The reversal of 122312030020 is 20030213221.

It can be written as a sum of positive squares in 2 ways, for example, as 38815304256 + 83496725764 = 197016^2 + 288958^2 .

It is a super-2 number, since 2×1223120300202 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122312029976 and 122312030003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3057800731 + ... + 3057800770.

It is an arithmetic number, because the mean of its divisors is an integer number (21404605257).

Almost surely, 2122312030020 is an apocalyptic number.

122312030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122312030020 is an abundant number, since it is smaller than the sum of its proper divisors (134543233064).

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

122312030020 is a wasteful number, since it uses less digits than its factorization.

122312030020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6115601510 (or 6115601508 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 122312030020 its reverse (20030213221), we get a palindrome (142342243241).

The spelling of 122312030020 in words is "one hundred twenty-two billion, three hundred twelve million, thirty thousand, twenty".

Divisors: 1 2 4 5 10 20 6115601501 12231203002 24462406004 30578007505 61156015010 122312030020