121668937 has 16 divisors (see below), whose sum is σ = 133757568. Its totient is φ = 109992960.

The previous prime is 121668931. The next prime is 121668971. The reversal of 121668937 is 739866121.

It is a cyclic number.

It is not a de Polignac number, because 121668937 - 2³ = 121668929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121668893 and 121668902.

It is not an unprimeable number, because it can be changed into a prime (121668931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177798 + ... + 178480.

It is an arithmetic number, because the mean of its divisors is an integer number (8359848).

Almost surely, 2^121668937 is an apocalyptic number.

It is an amenable number.

121668937 is a deficient number, since it is larger than the sum of its proper divisors (12088631).

121668937 is a wasteful number, since it uses less digits than its factorization.

121668937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960.

The product of its digits is 108864, while the sum is 43.

The square root of 121668937 is about 11030.3643185527. The cubic root of 121668937 is about 495.5185356256.

The spelling of 121668937 in words is "one hundred twenty-one million, six hundred sixty-eight thousand, nine hundred thirty-seven".