86220111501 has 20 divisors (see below), whose sum is σ = 129350753532. Its totient is φ = 57233366208.

The previous prime is 86220111487. The next prime is 86220111517. The reversal of 86220111501 is 10511102268.

It can be written as a sum of positive squares in 2 ways, for example, as 35347760100 + 50872351401 = 188010^2 + 225549^2 .

It is not a de Polignac number, because 86220111501 - 2⁵ = 86220111469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86220111541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2265346 + ... + 2303091.

Almost surely, 2^86220111501 is an apocalyptic number.

86220111501 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

86220111501 is a deficient number, since it is larger than the sum of its proper divisors (43130642031).

86220111501 is a wasteful number, since it uses less digits than its factorization.

86220111501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4568682 (or 4568673 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

Adding to 86220111501 its reverse (10511102268), we get a palindrome (96731213769).

The spelling of 86220111501 in words is "eighty-six billion, two hundred twenty million, one hundred eleven thousand, five hundred one".