2102120010931 has 2 divisors, whose sum is σ = 2102120010932. Its totient is φ = 2102120010930.

The previous prime is 2102120010901. The next prime is 2102120011003. The reversal of 2102120010931 is 1390100212012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102120010931 - 2¹⁵ = 2102119978163 is a prime.

It is a super-2 number, since 2×2102120010931² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2102120010901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051060005465 + 1051060005466.

It is an arithmetic number, because the mean of its divisors is an integer number (1051060005466).

Almost surely, 2^{2102120010931} is an apocalyptic number.

2102120010931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102120010931 is an equidigital number, since it uses as much as digits as its factorization.

2102120010931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 2102120010931 its reverse (1390100212012), we get a palindrome (3492220222943).

The spelling of 2102120010931 in words is "two trillion, one hundred two billion, one hundred twenty million, ten thousand, nine hundred thirty-one".