122557221160 has 32 divisors (see below), whose sum is σ = 300822271200. Its totient is φ = 44566262080.

The previous prime is 122557221131. The next prime is 122557221187. The reversal of 122557221160 is 61122755221.

It is a super-2 number, since 2×122557221160² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 139269130 + ... + 139270009.

It is an arithmetic number, because the mean of its divisors is an integer number (9400695975).

Almost surely, 2^122557221160 is an apocalyptic number.

122557221160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122557221160 is an abundant number, since it is smaller than the sum of its proper divisors (178265050040).

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

122557221160 is a wasteful number, since it uses less digits than its factorization.

122557221160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278539161 (or 278539157 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

Adding to 122557221160 its reverse (61122755221), we get a palindrome (183679976381).

The spelling of 122557221160 in words is "one hundred twenty-two billion, five hundred fifty-seven million, two hundred twenty-one thousand, one hundred sixty".