215312213512 has 32 divisors (see below), whose sum is σ = 442871776800. Its totient is φ = 97322425600.

The previous prime is 215312213471. The next prime is 215312213513.

215312213512 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (215312213513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6818689 + ... + 6850192.

It is an arithmetic number, because the mean of its divisors is an integer number (13839743025).

Almost surely, 2^215312213512 is an apocalyptic number.

215312213512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

215312213512 is an abundant number, since it is smaller than the sum of its proper divisors (227559563288).

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

215312213512 is a wasteful number, since it uses less digits than its factorization.

215312213512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13669077 (or 13669073 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

It can be divided in two parts, 215312 and 213512, that added together give a palindrome (428824).

The spelling of 215312213512 in words is "two hundred fifteen billion, three hundred twelve million, two hundred thirteen thousand, five hundred twelve".