87231222213278 has 16 divisors (see below), whose sum is σ = 153722153830896. Its totient is φ = 36600512816640.

The previous prime is 87231222213271. The next prime is 87231222213293.

87231222213278 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×87231222213278² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87231222213271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152502136451 + ... + 152502137022.

It is an arithmetic number, because the mean of its divisors is an integer number (9607634614431).

Almost surely, 2^{87231222213278} is an apocalyptic number.

87231222213278 is a deficient number, since it is larger than the sum of its proper divisors (66490931617618).

87231222213278 is a wasteful number, since it uses less digits than its factorization.

87231222213278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305004273499.

The product of its digits is 1806336, while the sum is 50.

The spelling of 87231222213278 in words is "eighty-seven trillion, two hundred thirty-one billion, two hundred twenty-two million, two hundred thirteen thousand, two hundred seventy-eight".