121663927 has 18 divisors (see below), whose sum is σ = 153238344. Its totient is φ = 94552920.

The previous prime is 121663901. The next prime is 121663937. The reversal of 121663927 is 729366121.

It is a de Polignac number, because none of the positive numbers 2^k-121663927 is a prime.

It is a super-2 number, since 2×121663927² = 29604222266122658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121663937) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 320824 + ... + 321202.

Almost surely, 2^121663927 is an apocalyptic number.

121663927 is a deficient number, since it is larger than the sum of its proper divisors (31574417).

121663927 is an frugal number, since it uses more digits than its factorization.

121663927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 397 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 121663927 is about 11030.1372158283. The cubic root of 121663927 is about 495.5117341581.

The spelling of 121663927 in words is "one hundred twenty-one million, six hundred sixty-three thousand, nine hundred twenty-seven".