612136212 has 12 divisors (see below), whose sum is σ = 1428317856. Its totient is φ = 204045400.

The previous prime is 612136207. The next prime is 612136247. The reversal of 612136212 is 212631216.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent 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, 25505664 + ... + 25505687.

It is an arithmetic number, because the mean of its divisors is an integer number (119026488).

Almost surely, 2^612136212 is an apocalyptic number.

It is an amenable number.

612136212 is an abundant number, since it is smaller than the sum of its proper divisors (816181644).

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

612136212 is a wasteful number, since it uses less digits than its factorization.

612136212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51011358 (or 51011356 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 612136212 is about 24741.3866224187. The cubic root of 612136212 is about 849.0814584973.

Adding to 612136212 its reverse (212631216), we get a palindrome (824767428).

The spelling of 612136212 in words is "six hundred twelve million, one hundred thirty-six thousand, two hundred twelve".