122557121140 has 48 divisors (see below), whose sum is σ = 272541132864. Its totient is φ = 46133772800.

The previous prime is 122557121107. The next prime is 122557121153. The reversal of 122557121140 is 41121755221.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 4068735 + ... + 4098745.

It is an arithmetic number, because the mean of its divisors is an integer number (5677940268).

Almost surely, 2^122557121140 is an apocalyptic number.

122557121140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122557121140 is an abundant number, since it is smaller than the sum of its proper divisors (149984011724).

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

122557121140 is a wasteful number, since it uses less digits than its factorization.

122557121140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42048 (or 42046 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 31.

Adding to 122557121140 its reverse (41121755221), we get a palindrome (163678876361).

The spelling of 122557121140 in words is "one hundred twenty-two billion, five hundred fifty-seven million, one hundred twenty-one thousand, one hundred forty".