2123122311312 has 40 divisors (see below), whose sum is σ = 5574646295040. Its totient is φ = 696105674880.

The previous prime is 2123122311217. The next prime is 2123122311329. The reversal of 2123122311312 is 2131132213212.

It is a super-2 number, since 2×2123122311312² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362552112 + ... + 362557967.

It is an arithmetic number, because the mean of its divisors is an integer number (139366157376).

Almost surely, 2^{2123122311312} is an apocalyptic number.

It is an amenable number.

2123122311312 is an abundant number, since it is smaller than the sum of its proper divisors (3451523983728).

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

2123122311312 is a wasteful number, since it uses less digits than its factorization.

2123122311312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725110151 (or 725110145 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

Adding to 2123122311312 its reverse (2131132213212), we get a palindrome (4254254524524).

The spelling of 2123122311312 in words is "two trillion, one hundred twenty-three billion, one hundred twenty-two million, three hundred eleven thousand, three hundred twelve".