2331250021 has 2 divisors, whose sum is σ = 2331250022. Its totient is φ = 2331250020.

The previous prime is 2331249989. The next prime is 2331250039. The reversal of 2331250021 is 1200521332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2301120900 + 30129121 = 47970^2 + 5489^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331250021 - 2⁵ = 2331249989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2331250081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165625010 + 1165625011.

It is an arithmetic number, because the mean of its divisors is an integer number (1165625011).

Almost surely, 2^2331250021 is an apocalyptic number.

It is an amenable number.

2331250021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331250021 is an equidigital number, since it uses as much as digits as its factorization.

2331250021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2331250021 is about 48283.0200070377. The cubic root of 2331250021 is about 1325.9575413319.

Adding to 2331250021 its reverse (1200521332), we get a palindrome (3531771353).

The spelling of 2331250021 in words is "two billion, three hundred thirty-one million, two hundred fifty thousand, twenty-one".