88212978821 has 16 divisors (see below), whose sum is σ = 101375255040. Its totient is φ = 75914359920.

The previous prime is 88212978781. The next prime is 88212978851. The reversal of 88212978821 is 12887921288.

It is a cyclic number.

It is not a de Polignac number, because 88212978821 - 2¹⁴ = 88212962437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88212978851) 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, 110366 + ... + 434288.

It is an arithmetic number, because the mean of its divisors is an integer number (6335953440).

Almost surely, 2^88212978821 is an apocalyptic number.

It is an amenable number.

88212978821 is a deficient number, since it is larger than the sum of its proper divisors (13162276219).

88212978821 is a wasteful number, since it uses less digits than its factorization.

88212978821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325256.

The product of its digits is 2064384, while the sum is 56.

The spelling of 88212978821 in words is "eighty-eight billion, two hundred twelve million, nine hundred seventy-eight thousand, eight hundred twenty-one".