2112151326531 has 16 divisors (see below), whose sum is σ = 2828833075200. Its totient is φ = 1401792517440.

The previous prime is 2112151326517. The next prime is 2112151326581. The reversal of 2112151326531 is 1356231512112.

It is not a de Polignac number, because 2112151326531 - 2¹⁰ = 2112151325507 is a prime.

It is a super-2 number, since 2×2112151326531² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112151326492 and 2112151326501.

It is not an unprimeable number, because it can be changed into a prime (2112151326581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250695 + ... + 2070543.

It is an arithmetic number, because the mean of its divisors is an integer number (176802067200).

Almost surely, 2^{2112151326531} is an apocalyptic number.

2112151326531 is a deficient number, since it is larger than the sum of its proper divisors (716681748669).

2112151326531 is a wasteful number, since it uses less digits than its factorization.

2112151326531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821586.

The product of its digits is 10800, while the sum is 33.

Adding to 2112151326531 its reverse (1356231512112), we get a palindrome (3468382838643).

The spelling of 2112151326531 in words is "two trillion, one hundred twelve billion, one hundred fifty-one million, three hundred twenty-six thousand, five hundred thirty-one".