2203231021 has 2 divisors, whose sum is σ = 2203231022. Its totient is φ = 2203231020.

The previous prime is 2203231003. The next prime is 2203231027. The reversal of 2203231021 is 1201323022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1900088100 + 303142921 = 43590^2 + 17411^2 .

It is a cyclic number.

It is not a de Polignac number, because 2203231021 - 2⁵ = 2203230989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2203230986 and 2203231004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2203231027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1101615510 + 1101615511.

It is an arithmetic number, because the mean of its divisors is an integer number (1101615511).

Almost surely, 2^2203231021 is an apocalyptic number.

It is an amenable number.

2203231021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2203231021 is an equidigital number, since it uses as much as digits as its factorization.

2203231021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2203231021 is about 46938.5877610309. The cubic root of 2203231021 is about 1301.2278381778.

Adding to 2203231021 its reverse (1201323022), we get a palindrome (3404554043).

The spelling of 2203231021 in words is "two billion, two hundred three million, two hundred thirty-one thousand, twenty-one".