86570312121 has 6 divisors (see below), whose sum is σ = 125046006410. Its totient is φ = 57713541408.

The previous prime is 86570312111. The next prime is 86570312149. The reversal of 86570312121 is 12121307568.

86570312121 is a `hidden beast` number, since 86 + 570 + 3 + 1 + 2 + 1 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 81250652025 + 5319660096 = 285045^2 + 72936^2 .

It is not a de Polignac number, because 86570312121 - 2⁵ = 86570312089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86570312111) 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, 4809461776 + ... + 4809461793.

Almost surely, 2^86570312121 is an apocalyptic number.

It is an amenable number.

86570312121 is a deficient number, since it is larger than the sum of its proper divisors (38475694289).

86570312121 is a wasteful number, since it uses less digits than its factorization.

86570312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9618923575 (or 9618923572 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

Adding to 86570312121 its reverse (12121307568), we get a palindrome (98691619689).

The spelling of 86570312121 in words is "eighty-six billion, five hundred seventy million, three hundred twelve thousand, one hundred twenty-one".