121028788 has 18 divisors (see below), whose sum is σ = 213636066. Its totient is φ = 59991984.

The previous prime is 121028777. The next prime is 121028833. The reversal of 121028788 is 887820121.

It can be written as a sum of positive squares in only one way, i.e., 93276964 + 27751824 = 9658^2 + 5268^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275473 + ... + 275911.

Almost surely, 2^121028788 is an apocalyptic number.

It is an amenable number.

121028788 is a deficient number, since it is larger than the sum of its proper divisors (92607278).

121028788 is an equidigital number, since it uses as much as digits as its factorization.

121028788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 121028788 is about 11001.3084676324. The cubic root of 121028788 is about 494.6479665493.

The spelling of 121028788 in words is "one hundred twenty-one million, twenty-eight thousand, seven hundred eighty-eight".