221002102253 has 2 divisors, whose sum is σ = 221002102254. Its totient is φ = 221002102252.

The previous prime is 221002102171. The next prime is 221002102313. The reversal of 221002102253 is 352201200122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142692796009 + 78309306244 = 377747^2 + 279838^2 .

It is a cyclic number.

It is not a de Polignac number, because 221002102253 - 2³⁰ = 219928360429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221002105253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110501051126 + 110501051127.

It is an arithmetic number, because the mean of its divisors is an integer number (110501051127).

Almost surely, 2^221002102253 is an apocalyptic number.

It is an amenable number.

221002102253 is a deficient number, since it is larger than the sum of its proper divisors (1).

221002102253 is an equidigital number, since it uses as much as digits as its factorization.

221002102253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 221002102253 its reverse (352201200122), we get a palindrome (573203302375).

The spelling of 221002102253 in words is "two hundred twenty-one billion, two million, one hundred two thousand, two hundred fifty-three".