212231213242 has 64 divisors (see below), whose sum is σ = 351459648000. Its totient is φ = 95786699008.

The previous prime is 212231213179. The next prime is 212231213267. The reversal of 212231213242 is 242312132212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19013259 + ... + 19024417.

It is an arithmetic number, because the mean of its divisors is an integer number (5491557000).

Almost surely, 2^212231213242 is an apocalyptic number.

212231213242 is a deficient number, since it is larger than the sum of its proper divisors (139228434758).

212231213242 is a wasteful number, since it uses less digits than its factorization.

212231213242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11535.

The product of its digits is 2304, while the sum is 25.

Adding to 212231213242 its reverse (242312132212), we get a palindrome (454543345454).

The spelling of 212231213242 in words is "two hundred twelve billion, two hundred thirty-one million, two hundred thirteen thousand, two hundred forty-two".