122257163620 has 24 divisors (see below), whose sum is σ = 271842399864. Its totient is φ = 46026226176.

The previous prime is 122257163597. The next prime is 122257163629. The reversal of 122257163620 is 26361752221.

It can be written as a sum of positive squares in 4 ways, for example, as 4002333696 + 118254829924 = 63264^2 + 343882^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 122257163620.

It is not an unprimeable number, because it can be changed into a prime (122257163629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179789607 + ... + 179790286.

It is an arithmetic number, because the mean of its divisors is an integer number (11326766661).

Almost surely, 2^122257163620 is an apocalyptic number.

122257163620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122257163620 is an abundant number, since it is smaller than the sum of its proper divisors (149585236244).

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

122257163620 is a wasteful number, since it uses less digits than its factorization.

122257163620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359579919 (or 359579917 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 122257163620 in words is "one hundred twenty-two billion, two hundred fifty-seven million, one hundred sixty-three thousand, six hundred twenty".