312231111010212 has 12 divisors (see below), whose sum is σ = 728539259023856. Its totient is φ = 104077037003400.

The previous prime is 312231111010199. The next prime is 312231111010213. The reversal of 312231111010212 is 212010111132213.

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

It is a super-2 number, since 2×312231111010212² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312231111010213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13009629625414 + ... + 13009629625437.

Almost surely, 2^{312231111010212} is an apocalyptic number.

It is an amenable number.

312231111010212 is an abundant number, since it is smaller than the sum of its proper divisors (416308148013644).

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

312231111010212 is a wasteful number, since it uses less digits than its factorization.

312231111010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26019259250858 (or 26019259250856 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 312231111010212 its reverse (212010111132213), we get a palindrome (524241222142425).

The spelling of 312231111010212 in words is "three hundred twelve trillion, two hundred thirty-one billion, one hundred eleven million, ten thousand, two hundred twelve".