121234638688 has 24 divisors (see below), whose sum is σ = 238715142120. Its totient is φ = 60608570880.

The previous prime is 121234638677. The next prime is 121234638691. The reversal of 121234638688 is 886836432121.

It is a super-2 number, since 2×121234638688² (a number of 23 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 45273 + ... + 494488.

It is an arithmetic number, because the mean of its divisors is an integer number (9946464255).

Almost surely, 2^121234638688 is an apocalyptic number.

It is an amenable number.

121234638688 is a deficient number, since it is larger than the sum of its proper divisors (117480503432).

121234638688 is an equidigital number, since it uses as much as digits as its factorization.

121234638688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546790 (or 546782 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 52.

The spelling of 121234638688 in words is "one hundred twenty-one billion, two hundred thirty-four million, six hundred thirty-eight thousand, six hundred eighty-eight".