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122201331020 = 22531197098921
BaseRepresentation
bin111000111001111000…
…1000101010101001100
3102200102102100210221222
41301303301011111030
54000232020043040
6132045530342512
711554156114046
oct1616361052514
9380372323858
10122201331020
114790951375a
121b824b8aa38
13b6a62937c2
145cb384ca96
1532a3386bb5
hex1c73c4554c

122201331020 has 24 divisors (see below), whose sum is σ = 264900951168. Its totient is φ = 47303740800.

The previous prime is 122201331011. The next prime is 122201331037. The reversal of 122201331020 is 20133102221.

It is a super-2 number, since 2×1222013310202 (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122201331020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98548841 + ... + 98550080.

It is an arithmetic number, because the mean of its divisors is an integer number (11037539632).

Almost surely, 2122201331020 is an apocalyptic number.

122201331020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122201331020 is an abundant number, since it is smaller than the sum of its proper divisors (142699620148).

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

122201331020 is a wasteful number, since it uses less digits than its factorization.

122201331020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197098961 (or 197098959 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 122201331020 its reverse (20133102221), we get a palindrome (142334433241).

The spelling of 122201331020 in words is "one hundred twenty-two billion, two hundred one million, three hundred thirty-one thousand, twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 197098921 394197842 788395684 985494605 1970989210 3941978420 6110066551 12220133102 24440266204 30550332755 61100665510 122201331020