21032200253 has 2 divisors, whose sum is σ = 21032200254. Its totient is φ = 21032200252.

The previous prime is 21032200159. The next prime is 21032200261. The reversal of 21032200253 is 35200223012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14431937689 + 6600262564 = 120133^2 + 81242^2 .

It is a cyclic number.

It is not a de Polignac number, because 21032200253 - 2³² = 16737232957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21032200153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516100126 + 10516100127.

It is an arithmetic number, because the mean of its divisors is an integer number (10516100127).

Almost surely, 2^21032200253 is an apocalyptic number.

It is an amenable number.

21032200253 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032200253 is an equidigital number, since it uses as much as digits as its factorization.

21032200253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 21032200253 its reverse (35200223012), we get a palindrome (56232423265).

The spelling of 21032200253 in words is "twenty-one billion, thirty-two million, two hundred thousand, two hundred fifty-three".