122557121004 has 48 divisors (see below), whose sum is σ = 302827206528. Its totient is φ = 38444337408.

The previous prime is 122557120981. The next prime is 122557121039. The reversal of 122557121004 is 400121755221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1750047 + ... + 1818729.

It is an arithmetic number, because the mean of its divisors is an integer number (6308900136).

Almost surely, 2^122557121004 is an apocalyptic number.

It is an amenable number.

122557121004 is an abundant number, since it is smaller than the sum of its proper divisors (180270085524).

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

122557121004 is a wasteful number, since it uses less digits than its factorization.

122557121004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77454 (or 77452 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

Adding to 122557121004 its reverse (400121755221), we get a palindrome (522678876225).

The spelling of 122557121004 in words is "one hundred twenty-two billion, five hundred fifty-seven million, one hundred twenty-one thousand, four".