212136353136 has 120 divisors (see below), whose sum is σ = 646835467440. Its totient is φ = 66552542208.

The previous prime is 212136353059. The next prime is 212136353167. The reversal of 212136353136 is 631353631212.

212136353136 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 3 + 635 + 3 + 13 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 212136353136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 724731 + ... + 974426.

It is an arithmetic number, because the mean of its divisors is an integer number (5390295562).

Almost surely, 2^212136353136 is an apocalyptic number.

It is an amenable number.

212136353136 is an abundant number, since it is smaller than the sum of its proper divisors (434699114304).

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

212136353136 is a wasteful number, since it uses less digits than its factorization.

212136353136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699208 (or 1699179 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

Adding to 212136353136 its reverse (631353631212), we get a palindrome (843489984348).

The spelling of 212136353136 in words is "two hundred twelve billion, one hundred thirty-six million, three hundred fifty-three thousand, one hundred thirty-six".