121887122 has 16 divisors (see below), whose sum is σ = 209699712. Its totient is φ = 52049760.

The previous prime is 121887113. The next prime is 121887131. The reversal of 121887122 is 221788121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121887113) and next prime (121887131).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11558 + ... + 19425.

It is an arithmetic number, because the mean of its divisors is an integer number (13106232).

Almost surely, 2^121887122 is an apocalyptic number.

121887122 is a deficient number, since it is larger than the sum of its proper divisors (87812590).

121887122 is a wasteful number, since it uses less digits than its factorization.

121887122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31273.

The product of its digits is 3584, while the sum is 32.

The square root of 121887122 is about 11040.2500877471. The cubic root of 121887122 is about 495.8145579094.

Subtracting 121887122 from its reverse (221788121), we obtain a palindrome (99900999).

The spelling of 121887122 in words is "one hundred twenty-one million, eight hundred eighty-seven thousand, one hundred twenty-two".