2120031101 has 2 divisors, whose sum is σ = 2120031102. Its totient is φ = 2120031100.

The previous prime is 2120031079. The next prime is 2120031139. The reversal of 2120031101 is 1011300212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2101764025 + 18267076 = 45845^2 + 4274^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120031101 - 2²⁶ = 2052922237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120031161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060015550 + 1060015551.

It is an arithmetic number, because the mean of its divisors is an integer number (1060015551).

Almost surely, 2^2120031101 is an apocalyptic number.

It is an amenable number.

2120031101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120031101 is an equidigital number, since it uses as much as digits as its factorization.

2120031101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2120031101 is about 46043.7954669247. The cubic root of 2120031101 is about 1284.6379396518.

Adding to 2120031101 its reverse (1011300212), we get a palindrome (3131331313).

The spelling of 2120031101 in words is "two billion, one hundred twenty million, thirty-one thousand, one hundred one".