2131223202212 has 36 divisors (see below), whose sum is σ = 4112116309980. Its totient is φ = 960766051392.

The previous prime is 2131223202203. The next prime is 2131223202289. The reversal of 2131223202212 is 2122023221312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1190835292516 + 940387909696 = 1091254^2 + 969736^2 .

It is a super-2 number, since 2×2131223202212² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10986887 + ... + 11179182.

It is an arithmetic number, because the mean of its divisors is an integer number (114225453055).

Almost surely, 2^{2131223202212} is an apocalyptic number.

It is an amenable number.

2131223202212 is a deficient number, since it is larger than the sum of its proper divisors (1980893107768).

2131223202212 is a wasteful number, since it uses less digits than its factorization.

2131223202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22166172 (or 22166127 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2131223202212 its reverse (2122023221312), we get a palindrome (4253246423524).

The spelling of 2131223202212 in words is "two trillion, one hundred thirty-one billion, two hundred twenty-three million, two hundred two thousand, two hundred twelve".