2112122211231 has 48 divisors (see below), whose sum is σ = 2882548698624. Its totient is φ = 1375441796736.

The previous prime is 2112122211209. The next prime is 2112122211259. The reversal of 2112122211231 is 1321122212112.

It is not a de Polignac number, because 2112122211231 - 2⁶ = 2112122211167 is a prime.

It is a super-2 number, since 2×2112122211231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112122211198 and 2112122211207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112122211931) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1473915691 + ... + 1473917123.

It is an arithmetic number, because the mean of its divisors is an integer number (60053097888).

Almost surely, 2^{2112122211231} is an apocalyptic number.

2112122211231 is a deficient number, since it is larger than the sum of its proper divisors (770426487393).

2112122211231 is a wasteful number, since it uses less digits than its factorization.

2112122211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140 (or 2013 counting only the distinct ones).

The product of its digits is 192, while the sum is 21.

Adding to 2112122211231 its reverse (1321122212112), we get a palindrome (3433244423343).

The spelling of 2112122211231 in words is "two trillion, one hundred twelve billion, one hundred twenty-two million, two hundred eleven thousand, two hundred thirty-one".