2221510253 has 2 divisors, whose sum is σ = 2221510254. Its totient is φ = 2221510252.

The previous prime is 2221510237. The next prime is 2221510259. The reversal of 2221510253 is 3520151222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2100113929 + 121396324 = 45827^2 + 11018^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221510253 - 2⁴ = 2221510237 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221510259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110755126 + 1110755127.

It is an arithmetic number, because the mean of its divisors is an integer number (1110755127).

Almost surely, 2^2221510253 is an apocalyptic number.

It is an amenable number.

2221510253 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221510253 is an equidigital number, since it uses as much as digits as its factorization.

2221510253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2221510253 is about 47132.8999001759. The cubic root of 2221510253 is about 1304.8165022401.

Adding to 2221510253 its reverse (3520151222), we get a palindrome (5741661475).

The spelling of 2221510253 in words is "two billion, two hundred twenty-one million, five hundred ten thousand, two hundred fifty-three".