2111112311312 has 20 divisors (see below), whose sum is σ = 4330884815676. Its totient is φ = 993464616960.

The previous prime is 2111112311291. The next prime is 2111112311327. The reversal of 2111112311312 is 2131132111112.

It can be written as a sum of positive squares in 2 ways, for example, as 1397398237456 + 713714073856 = 1182116^2 + 844816^2 .

It is a super-2 number, since 2×2111112311312² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3880720889 + ... + 3880721432.

Almost surely, 2^{2111112311312} is an apocalyptic number.

It is an amenable number.

2111112311312 is an abundant number, since it is smaller than the sum of its proper divisors (2219772504364).

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

2111112311312 is a wasteful number, since it uses less digits than its factorization.

2111112311312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7761442346 (or 7761442340 counting only the distinct ones).

The product of its digits is 72, while the sum is 20.

Adding to 2111112311312 its reverse (2131132111112), we get a palindrome (4242244422424).

The spelling of 2111112311312 in words is "two trillion, one hundred eleven billion, one hundred twelve million, three hundred eleven thousand, three hundred twelve".