121155044 has 6 divisors (see below), whose sum is σ = 212021334. Its totient is φ = 60577520.

The previous prime is 121155043. The next prime is 121155059. The reversal of 121155044 is 440551121.

It can be written as a sum of positive squares in only one way, i.e., 110670400 + 10484644 = 10520^2 + 3238^2 .

It is not an unprimeable number, because it can be changed into a prime (121155043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15144377 + ... + 15144384.

It is an arithmetic number, because the mean of its divisors is an integer number (35336889).

Almost surely, 2^121155044 is an apocalyptic number.

It is an amenable number.

121155044 is a deficient number, since it is larger than the sum of its proper divisors (90866290).

121155044 is a wasteful number, since it uses less digits than its factorization.

121155044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30288765 (or 30288763 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 121155044 is about 11007.0451984172. The cubic root of 121155044 is about 494.8199106813.

The spelling of 121155044 in words is "one hundred twenty-one million, one hundred fifty-five thousand, forty-four".