86855221131 has 16 divisors (see below), whose sum is σ = 132553515264. Its totient is φ = 49555541664.

The previous prime is 86855221111. The next prime is 86855221153. The reversal of 86855221131 is 13112255868.

It is not a de Polignac number, because 86855221131 - 2¹⁰ = 86855220107 is a prime.

It is a super-2 number, since 2×86855221131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86855221111) 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, 3153181 + ... + 3180606.

It is an arithmetic number, because the mean of its divisors is an integer number (8284594704).

Almost surely, 2^86855221131 is an apocalyptic number.

86855221131 is a deficient number, since it is larger than the sum of its proper divisors (45698294133).

86855221131 is a wasteful number, since it uses less digits than its factorization.

86855221131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6334450.

The product of its digits is 115200, while the sum is 42.

Adding to 86855221131 its reverse (13112255868), we get a palindrome (99967476999).

The spelling of 86855221131 in words is "eighty-six billion, eight hundred fifty-five million, two hundred twenty-one thousand, one hundred thirty-one".