2120831701 has 2 divisors, whose sum is σ = 2120831702. Its totient is φ = 2120831700.

The previous prime is 2120831663. The next prime is 2120831707. The reversal of 2120831701 is 1071380212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1398834801 + 721996900 = 37401^2 + 26870^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120831701 - 2¹⁷ = 2120700629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120831707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060415850 + 1060415851.

It is an arithmetic number, because the mean of its divisors is an integer number (1060415851).

Almost surely, 2^2120831701 is an apocalyptic number.

It is an amenable number.

2120831701 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120831701 is an equidigital number, since it uses as much as digits as its factorization.

2120831701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 2120831701 is about 46052.4885429658. The cubic root of 2120831701 is about 1284.7996277983.

The spelling of 2120831701 in words is "two billion, one hundred twenty million, eight hundred thirty-one thousand, seven hundred one".