212331211312 has 40 divisors (see below), whose sum is σ = 459737106192. Its totient is φ = 94160179200.

The previous prime is 212331211307. The next prime is 212331211349. The reversal of 212331211312 is 213112133212.

It is a super-2 number, since 2×212331211312² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14705313 + ... + 14719744.

Almost surely, 2^212331211312 is an apocalyptic number.

212331211312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212331211312 is an abundant number, since it is smaller than the sum of its proper divisors (247405894880).

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

212331211312 is a wasteful number, since it uses less digits than its factorization.

212331211312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29425117 (or 29425111 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 212331211312 its reverse (213112133212), we get a palindrome (425443344524).

The spelling of 212331211312 in words is "two hundred twelve billion, three hundred thirty-one million, two hundred eleven thousand, three hundred twelve".