21223202053 has 2 divisors, whose sum is σ = 21223202054. Its totient is φ = 21223202052.

The previous prime is 21223201997. The next prime is 21223202071. The reversal of 21223202053 is 35020232212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21007023844 + 216178209 = 144938^2 + 14703^2 .

It is a cyclic number.

It is not a de Polignac number, because 21223202053 - 2⁹ = 21223201541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21223202083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611601026 + 10611601027.

It is an arithmetic number, because the mean of its divisors is an integer number (10611601027).

Almost surely, 2^21223202053 is an apocalyptic number.

It is an amenable number.

21223202053 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223202053 is an equidigital number, since it uses as much as digits as its factorization.

21223202053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 21223202053 its reverse (35020232212), we get a palindrome (56243434265).

The spelling of 21223202053 in words is "twenty-one billion, two hundred twenty-three million, two hundred two thousand, fifty-three".