121125087 has 24 divisors (see below), whose sum is σ = 183104064. Its totient is φ = 77073984.

The previous prime is 121125073. The next prime is 121125139. The reversal of 121125087 is 780521121.

It is not a de Polignac number, because 121125087 - 2⁴ = 121125071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121125087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14218 + ... + 21080.

It is an arithmetic number, because the mean of its divisors is an integer number (7629336).

Almost surely, 2^121125087 is an apocalyptic number.

121125087 is a deficient number, since it is larger than the sum of its proper divisors (61978977).

121125087 is a wasteful number, since it uses less digits than its factorization.

121125087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6959 (or 6956 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 121125087 is about 11005.6843040313. The cubic root of 121125087 is about 494.7791239850.

The spelling of 121125087 in words is "one hundred twenty-one million, one hundred twenty-five thousand, eighty-seven".