215222222512 has 80 divisors (see below), whose sum is σ = 481829589504. Its totient is φ = 92041344000.

The previous prime is 215222222401. The next prime is 215222222569.

215222222512 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9775837 + ... + 9797827.

Almost surely, 2^215222222512 is an apocalyptic number.

215222222512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215222222512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240914794752).

215222222512 is an abundant number, since it is smaller than the sum of its proper divisors (266607366992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215222222512 is a wasteful number, since it uses less digits than its factorization.

215222222512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25298 (or 25292 counting only the distinct ones).

The product of its digits is 6400, while the sum is 28.

It can be divided in two parts, 215222 and 222512, that added together give a palindrome (437734).

The spelling of 215222222512 in words is "two hundred fifteen billion, two hundred twenty-two million, two hundred twenty-two thousand, five hundred twelve".