121055512 has 16 divisors (see below), whose sum is σ = 234806400. Its totient is φ = 58440480.

The previous prime is 121055491. The next prime is 121055513. The reversal of 121055512 is 215550121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121055513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260664 + ... + 261127.

It is an arithmetic number, because the mean of its divisors is an integer number (14675400).

Almost surely, 2^121055512 is an apocalyptic number.

It is an amenable number.

121055512 is a deficient number, since it is larger than the sum of its proper divisors (113750888).

121055512 is a wasteful number, since it uses less digits than its factorization.

121055512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521826 (or 521822 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 121055512 is about 11002.5229833889. The cubic root of 121055512 is about 494.6843711096.

The spelling of 121055512 in words is "one hundred twenty-one million, fifty-five thousand, five hundred twelve".