121451512 has 96 divisors (see below), whose sum is σ = 289608480. Its totient is φ = 46725120.

The previous prime is 121451489. The next prime is 121451531. The reversal of 121451512 is 215154121.

It is a super-2 number, since 2×121451512² = 29500939534172288, which 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 23 ways as a sum of consecutive naturals, for example, 387868 + ... + 388180.

It is an arithmetic number, because the mean of its divisors is an integer number (3016755).

Almost surely, 2^121451512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121451512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144804240).

121451512 is an abundant number, since it is smaller than the sum of its proper divisors (168156968).

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

121451512 is a wasteful number, since it uses less digits than its factorization.

121451512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 376 counting only the distinct ones).

The product of its digits is 400, while the sum is 22.

The square root of 121451512 is about 11020.5041626960. The cubic root of 121451512 is about 495.2231922103.

The spelling of 121451512 in words is "one hundred twenty-one million, four hundred fifty-one thousand, five hundred twelve".