121055507 has 4 divisors (see below), whose sum is σ = 121160760. Its totient is φ = 120950256.

The previous prime is 121055491. The next prime is 121055513. The reversal of 121055507 is 705550121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121055507 - 2⁴ = 121055491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121055107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50882 + ... + 53207.

It is an arithmetic number, because the mean of its divisors is an integer number (30290190).

Almost surely, 2^121055507 is an apocalyptic number.

121055507 is a deficient number, since it is larger than the sum of its proper divisors (105253).

121055507 is a wasteful number, since it uses less digits than its factorization.

121055507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105252.

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 121055507 is about 11002.5227561682. The cubic root of 121055507 is about 494.6843642989.

The spelling of 121055507 in words is "one hundred twenty-one million, fifty-five thousand, five hundred seven".