121577600228 has 96 divisors (see below), whose sum is σ = 250880716800. Its totient is φ = 50478886656.

The previous prime is 121577600227. The next prime is 121577600239. The reversal of 121577600228 is 822006775121.

It is a super-2 number, since 2×121577600228² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121577600227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51017525 + ... + 51019907.

It is an arithmetic number, because the mean of its divisors is an integer number (2613340800).

Almost surely, 2^121577600228 is an apocalyptic number.

It is an amenable number.

121577600228 is an abundant number, since it is smaller than the sum of its proper divisors (129303116572).

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

121577600228 is a wasteful number, since it uses less digits than its factorization.

121577600228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889 (or 2887 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 121577600228 in words is "one hundred twenty-one billion, five hundred seventy-seven million, six hundred thousand, two hundred twenty-eight".