121253758912 has 56 divisors (see below), whose sum is σ = 282678146352. Its totient is φ = 50875699200.

The previous prime is 121253758907. The next prime is 121253758919. The reversal of 121253758912 is 219857352121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121253758919) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6615289 + ... + 6633592.

It is an arithmetic number, because the mean of its divisors is an integer number (5047824042).

Almost surely, 2^121253758912 is an apocalyptic number.

It is an amenable number.

121253758912 is an abundant number, since it is smaller than the sum of its proper divisors (161424387440).

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

121253758912 is a wasteful number, since it uses less digits than its factorization.

121253758912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13248917 (or 13248907 counting only the distinct ones).

The product of its digits is 302400, while the sum is 46.

The spelling of 121253758912 in words is "one hundred twenty-one billion, two hundred fifty-three million, seven hundred fifty-eight thousand, nine hundred twelve".