2131112203212 has 24 divisors (see below), whose sum is σ = 4980140827200. Its totient is φ = 709292779216.

The previous prime is 2131112203193. The next prime is 2131112203219. The reversal of 2131112203212 is 2123022111312.

It is not an unprimeable number, because it can be changed into a prime (2131112203219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134736162 + ... + 134751977.

It is an arithmetic number, because the mean of its divisors is an integer number (207505867800).

Almost surely, 2^{2131112203212} is an apocalyptic number.

It is an amenable number.

2131112203212 is an abundant number, since it is smaller than the sum of its proper divisors (2849028623988).

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

2131112203212 is a wasteful number, since it uses less digits than its factorization.

2131112203212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269488805 (or 269488803 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2131112203212 its reverse (2123022111312), we get a palindrome (4254134314524).

The spelling of 2131112203212 in words is "two trillion, one hundred thirty-one billion, one hundred twelve million, two hundred three thousand, two hundred twelve".