1012111315231 has 2 divisors, whose sum is σ = 1012111315232. Its totient is φ = 1012111315230.

The previous prime is 1012111315219. The next prime is 1012111315253. The reversal of 1012111315231 is 1325131112101.

1012111315231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (1012111315253) can be obtained adding 1012111315231 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012111315231 - 2²³ = 1012102926623 is a prime.

It is a super-2 number, since 2×1012111315231² (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 (1012111315261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506055657615 + 506055657616.

It is an arithmetic number, because the mean of its divisors is an integer number (506055657616).

Almost surely, 2^{1012111315231} is an apocalyptic number.

1012111315231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012111315231 is an equidigital number, since it uses as much as digits as its factorization.

1012111315231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 22.

Adding to 1012111315231 its reverse (1325131112101), we get a palindrome (2337242427332).

The spelling of 1012111315231 in words is "one trillion, twelve billion, one hundred eleven million, three hundred fifteen thousand, two hundred thirty-one".