12311012212 has 24 divisors (see below), whose sum is σ = 21723166080. Its totient is φ = 6104563680.

The previous prime is 12311012201. The next prime is 12311012221. The reversal of 12311012212 is 21221011321.

It is a super-2 number, since 2×12311012212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272262 + ... + 314242.

It is an arithmetic number, because the mean of its divisors is an integer number (905131920).

Almost surely, 2^12311012212 is an apocalyptic number.

It is an amenable number.

12311012212 is a deficient number, since it is larger than the sum of its proper divisors (9412153868).

12311012212 is a wasteful number, since it uses less digits than its factorization.

12311012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42591 (or 42589 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12311012212 its reverse (21221011321), we get a palindrome (33532023533).

The spelling of 12311012212 in words is "twelve billion, three hundred eleven million, twelve thousand, two hundred twelve".