2231121122212 has 12 divisors (see below), whose sum is σ = 3957947744716. Its totient is φ = 1100278909440.

The previous prime is 2231121122203. The next prime is 2231121122231. The reversal of 2231121122212 is 2122211211322.

It can be written as a sum of positive squares in 2 ways, for example, as 1691107781476 + 540013340736 = 1300426^2 + 734856^2 .

It is a super-3 number, since 3×2231121122212³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3820412589 + ... + 3820413172.

Almost surely, 2^{2231121122212} is an apocalyptic number.

It is an amenable number.

2231121122212 is a deficient number, since it is larger than the sum of its proper divisors (1726826622504).

2231121122212 is a wasteful number, since it uses less digits than its factorization.

2231121122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7640825838 (or 7640825836 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

Adding to 2231121122212 its reverse (2122211211322), we get a palindrome (4353332333534).

The spelling of 2231121122212 in words is "two trillion, two hundred thirty-one billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twelve".