86935117221 has 12 divisors (see below), whose sum is σ = 127447171072. Its totient is φ = 57091718376.

The previous prime is 86935117207. The next prime is 86935117223. The reversal of 86935117221 is 12271153968.

86935117221 is a `hidden beast` number, since 8 + 69 + 3 + 511 + 72 + 2 + 1 = 666.

It is not a de Polignac number, because 86935117221 - 2¹³ = 86935109029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86935117223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72084901 + ... + 72086106.

Almost surely, 2^86935117221 is an apocalyptic number.

It is an amenable number.

86935117221 is a deficient number, since it is larger than the sum of its proper divisors (40512053851).

86935117221 is a wasteful number, since it uses less digits than its factorization.

86935117221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144171080 (or 144171077 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The spelling of 86935117221 in words is "eighty-six billion, nine hundred thirty-five million, one hundred seventeen thousand, two hundred twenty-one".