212810881315 has 4 divisors (see below), whose sum is σ = 255373057584. Its totient is φ = 170248705048.

The previous prime is 212810881303. The next prime is 212810881333. The reversal of 212810881315 is 513188018212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212810881315 - 2²¹ = 212808784163 is a prime.

It is a super-2 number, since 2×212810881315² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21281088127 + ... + 21281088136.

It is an arithmetic number, because the mean of its divisors is an integer number (63843264396).

Almost surely, 2^212810881315 is an apocalyptic number.

212810881315 is a deficient number, since it is larger than the sum of its proper divisors (42562176269).

212810881315 is an equidigital number, since it uses as much as digits as its factorization.

212810881315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42562176268.

The product of its (nonzero) digits is 30720, while the sum is 40.

Adding to 212810881315 its reverse (513188018212), we get a palindrome (725998899527).

The spelling of 212810881315 in words is "two hundred twelve billion, eight hundred ten million, eight hundred eighty-one thousand, three hundred fifteen".