2221431253 has 2 divisors, whose sum is σ = 2221431254. Its totient is φ = 2221431252.

The previous prime is 2221431203. The next prime is 2221431283. The reversal of 2221431253 is 3521341222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1736638929 + 484792324 = 41673^2 + 22018^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221431253 - 2⁹ = 2221430741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221431203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110715626 + 1110715627.

It is an arithmetic number, because the mean of its divisors is an integer number (1110715627).

Almost surely, 2^2221431253 is an apocalyptic number.

It is an amenable number.

2221431253 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221431253 is an equidigital number, since it uses as much as digits as its factorization.

2221431253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 2221431253 is about 47132.0618369279. The cubic root of 2221431253 is about 1304.8010350258.

Adding to 2221431253 its reverse (3521341222), we get a palindrome (5742772475).

The spelling of 2221431253 in words is "two billion, two hundred twenty-one million, four hundred thirty-one thousand, two hundred fifty-three".