86512240221 has 16 divisors (see below), whose sum is σ = 126283814208. Its totient is φ = 52245065600.

The previous prime is 86512240211. The next prime is 86512240249. The reversal of 86512240221 is 12204221568.

It is a cyclic number.

It is not a de Polignac number, because 86512240221 - 2¹⁰ = 86512239197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86512240211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4655466 + ... + 4674011.

It is an arithmetic number, because the mean of its divisors is an integer number (7892738388).

Almost surely, 2^86512240221 is an apocalyptic number.

It is an amenable number.

86512240221 is a deficient number, since it is larger than the sum of its proper divisors (39771573987).

86512240221 is a wasteful number, since it uses less digits than its factorization.

86512240221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9329772.

The product of its (nonzero) digits is 15360, while the sum is 33.

Adding to 86512240221 its reverse (12204221568), we get a palindrome (98716461789).

The spelling of 86512240221 in words is "eighty-six billion, five hundred twelve million, two hundred forty thousand, two hundred twenty-one".