121155146 has 16 divisors (see below), whose sum is σ = 211934400. Its totient is φ = 51923340.

The previous prime is 121155119. The next prime is 121155163. The reversal of 121155146 is 641551121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87620 + ... + 88991.

It is an arithmetic number, because the mean of its divisors is an integer number (13245900).

Almost surely, 2^121155146 is an apocalyptic number.

121155146 is a deficient number, since it is larger than the sum of its proper divisors (90779254).

121155146 is an equidigital number, since it uses as much as digits as its factorization.

121155146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176634 (or 176620 counting only the distinct ones).

The product of its digits is 1200, while the sum is 26.

The square root of 121155146 is about 11007.0498318123. The cubic root of 121155146 is about 494.8200495437.

The spelling of 121155146 in words is "one hundred twenty-one million, one hundred fifty-five thousand, one hundred forty-six".