2120311100231 has 2 divisors, whose sum is σ = 2120311100232. Its totient is φ = 2120311100230.

The previous prime is 2120311100161. The next prime is 2120311100249. The reversal of 2120311100231 is 1320011130212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120311100231 is a prime.

It is a super-2 number, since 2×2120311100231² (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 (2120311100291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060155550115 + 1060155550116.

It is an arithmetic number, because the mean of its divisors is an integer number (1060155550116).

Almost surely, 2^{2120311100231} is an apocalyptic number.

2120311100231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120311100231 is an equidigital number, since it uses as much as digits as its factorization.

2120311100231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2120311100231 its reverse (1320011130212), we get a palindrome (3440322230443).

The spelling of 2120311100231 in words is "two trillion, one hundred twenty billion, three hundred eleven million, one hundred thousand, two hundred thirty-one".