2100232021 has 2 divisors, whose sum is σ = 2100232022. Its totient is φ = 2100232020.

The previous prime is 2100231953. The next prime is 2100232031. The reversal of 2100232021 is 1202320012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1905322500 + 194909521 = 43650^2 + 13961^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100232021 - 2²⁹ = 1563361109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2100231992 and 2100232010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100232031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050116010 + 1050116011.

It is an arithmetic number, because the mean of its divisors is an integer number (1050116011).

Almost surely, 2^2100232021 is an apocalyptic number.

It is an amenable number.

2100232021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100232021 is an equidigital number, since it uses as much as digits as its factorization.

2100232021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2100232021 is about 45828.2884362923. The cubic root of 2100232021 is about 1280.6263253552.

Adding to 2100232021 its reverse (1202320012), we get a palindrome (3302552033).

The spelling of 2100232021 in words is "two billion, one hundred million, two hundred thirty-two thousand, twenty-one".