121153216 has 28 divisors (see below), whose sum is σ = 245534688. Its totient is φ = 59286272.

The previous prime is 121153181. The next prime is 121153247. The reversal of 121153216 is 612351121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17131 + ... + 23146.

It is an arithmetic number, because the mean of its divisors is an integer number (8769096).

Almost surely, 2^121153216 is an apocalyptic number.

121153216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121153216 is an abundant number, since it is smaller than the sum of its proper divisors (124381472).

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

121153216 is an equidigital number, since it uses as much as digits as its factorization.

121153216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40336 (or 40326 counting only the distinct ones).

The product of its digits is 360, while the sum is 22.

The square root of 121153216 is about 11006.9621603783. The cubic root of 121153216 is about 494.8174220373.

The spelling of 121153216 in words is "one hundred twenty-one million, one hundred fifty-three thousand, two hundred sixteen".