88312222221389 has 4 divisors (see below), whose sum is σ = 88320632118780. Its totient is φ = 88303812324000.

The previous prime is 88312222221383. The next prime is 88312222221409. The reversal of 88312222221389 is 98312222221388.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43027263273289 + 45284958948100 = 6559517^2 + 6729410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88312222221389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88312222221389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88312222221383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4204932944 + ... + 4204953945.

It is an arithmetic number, because the mean of its divisors is an integer number (22080158029695).

Almost surely, 2^{88312222221389} is an apocalyptic number.

It is an amenable number.

88312222221389 is a deficient number, since it is larger than the sum of its proper divisors (8409897391).

88312222221389 is a wasteful number, since it uses less digits than its factorization.

88312222221389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8409897390.

The product of its digits is 2654208, while the sum is 53.

Subtracting 88312222221389 from its reverse (98312222221388), we obtain a palindrome (9999999999999).

The spelling of 88312222221389 in words is "eighty-eight trillion, three hundred twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, three hundred eighty-nine".