2012131232981 has 2 divisors, whose sum is σ = 2012131232982. Its totient is φ = 2012131232980.

The previous prime is 2012131232957. The next prime is 2012131233053. The reversal of 2012131232981 is 1892321312102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2010298622500 + 1832610481 = 1417850^2 + 42809^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012131232981 - 2³⁸ = 1737253326037 is a prime.

It is a super-2 number, since 2×2012131232981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012131232911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006065616490 + 1006065616491.

It is an arithmetic number, because the mean of its divisors is an integer number (1006065616491).

Almost surely, 2^{2012131232981} is an apocalyptic number.

It is an amenable number.

2012131232981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012131232981 is an equidigital number, since it uses as much as digits as its factorization.

2012131232981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 2012131232981 in words is "two trillion, twelve billion, one hundred thirty-one million, two hundred thirty-two thousand, nine hundred eighty-one".