121630887 has 72 divisors (see below), whose sum is σ = 216871200. Its totient is φ = 65620800.

The previous prime is 121630879. The next prime is 121630891. The reversal of 121630887 is 788036121.

121630887 is a `hidden beast` number, since 12 + 1 + 630 + 8 + 8 + 7 = 666.

It is not a de Polignac number, because 121630887 - 2³ = 121630879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121630807) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2966587 + ... + 2966627.

It is an arithmetic number, because the mean of its divisors is an integer number (3012100).

Almost surely, 2^121630887 is an apocalyptic number.

121630887 is a deficient number, since it is larger than the sum of its proper divisors (95240313).

121630887 is an equidigital number, since it uses as much as digits as its factorization.

121630887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 121630887 is about 11028.6393993094. The cubic root of 121630887 is about 495.4668750934.

The spelling of 121630887 in words is "one hundred twenty-one million, six hundred thirty thousand, eight hundred eighty-seven".