215322223512 has 32 divisors (see below), whose sum is σ = 587242428480. Its totient is φ = 65249158560.

The previous prime is 215322223463. The next prime is 215322223559.

It is a happy number.

215322223512 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×215322223512² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215322223512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407806978 + ... + 407807505.

It is an arithmetic number, because the mean of its divisors is an integer number (18351325890).

Almost surely, 2^215322223512 is an apocalyptic number.

215322223512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

215322223512 is an abundant number, since it is smaller than the sum of its proper divisors (371920204968).

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

215322223512 is a wasteful number, since it uses less digits than its factorization.

215322223512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815614503 (or 815614499 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

It can be divided in two parts, 215322 and 223512, that added together give a palindrome (438834).

The spelling of 215322223512 in words is "two hundred fifteen billion, three hundred twenty-two million, two hundred twenty-three thousand, five hundred twelve".