212300564155 has 4 divisors (see below), whose sum is σ = 254760676992. Its totient is φ = 169840451320.

The previous prime is 212300564101. The next prime is 212300564191. The reversal of 212300564155 is 551465003212.

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

It is not a de Polignac number, because 212300564155 - 2¹⁹ = 212300039867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212300564155.

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, 21230056411 + ... + 21230056420.

It is an arithmetic number, because the mean of its divisors is an integer number (63690169248).

Almost surely, 2^212300564155 is an apocalyptic number.

212300564155 is a deficient number, since it is larger than the sum of its proper divisors (42460112837).

212300564155 is an equidigital number, since it uses as much as digits as its factorization.

212300564155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42460112836.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 212300564155 its reverse (551465003212), we get a palindrome (763765567367).

The spelling of 212300564155 in words is "two hundred twelve billion, three hundred million, five hundred sixty-four thousand, one hundred fifty-five".