212012022231 has 6 divisors (see below), whose sum is σ = 306239587680. Its totient is φ = 141341348148.

The previous prime is 212012022163. The next prime is 212012022269. The reversal of 212012022231 is 132220210212.

It is not a de Polignac number, because 212012022231 - 2¹⁵ = 212011989463 is a prime.

It is a super-2 number, since 2×212012022231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012022731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11778445671 + ... + 11778445688.

It is an arithmetic number, because the mean of its divisors is an integer number (51039931280).

Almost surely, 2^212012022231 is an apocalyptic number.

212012022231 is a deficient number, since it is larger than the sum of its proper divisors (94227565449).

212012022231 is a wasteful number, since it uses less digits than its factorization.

212012022231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23556891365 (or 23556891362 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212012022231 its reverse (132220210212), we get a palindrome (344232232443).

The spelling of 212012022231 in words is "two hundred twelve billion, twelve million, twenty-two thousand, two hundred thirty-one".