2120705139131 has 2 divisors, whose sum is σ = 2120705139132. Its totient is φ = 2120705139130.

The previous prime is 2120705139043. The next prime is 2120705139139. The reversal of 2120705139131 is 1319315070212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120705139131 is a prime.

It is a super-2 number, since 2×2120705139131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2120705139091 and 2120705139100.

It is not a weakly prime, because it can be changed into another prime (2120705139139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060352569565 + 1060352569566.

It is an arithmetic number, because the mean of its divisors is an integer number (1060352569566).

Almost surely, 2^{2120705139131} is an apocalyptic number.

2120705139131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120705139131 is an equidigital number, since it uses as much as digits as its factorization.

2120705139131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The spelling of 2120705139131 in words is "two trillion, one hundred twenty billion, seven hundred five million, one hundred thirty-nine thousand, one hundred thirty-one".