116221887 has 6 divisors (see below), whose sum is σ = 167876072. Its totient is φ = 77481252.

The previous prime is 116221871. The next prime is 116221909. The reversal of 116221887 is 788122611.

116221887 is a `hidden beast` number, since 11 + 622 + 18 + 8 + 7 = 666.

It is not a de Polignac number, because 116221887 - 2⁴ = 116221871 is a prime.

It is a super-3 number, since 3×116221887³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116221837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6456763 + ... + 6456780.

Almost surely, 2^116221887 is an apocalyptic number.

116221887 is a deficient number, since it is larger than the sum of its proper divisors (51654185).

116221887 is a wasteful number, since it uses less digits than its factorization.

116221887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12913549 (or 12913546 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 116221887 is about 10780.6255384370. The cubic root of 116221887 is about 488.0106585843.

The spelling of 116221887 in words is "one hundred sixteen million, two hundred twenty-one thousand, eight hundred eighty-seven".