21022199053 has 2 divisors, whose sum is σ = 21022199054. Its totient is φ = 21022199052.

The previous prime is 21022199047. The next prime is 21022199063. The reversal of 21022199053 is 35099122012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11003590404 + 10018608649 = 104898^2 + 100093^2 .

It is a cyclic number.

It is not a de Polignac number, because 21022199053 - 2⁵ = 21022199021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21022199063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511099526 + 10511099527.

It is an arithmetic number, because the mean of its divisors is an integer number (10511099527).

Almost surely, 2^21022199053 is an apocalyptic number.

It is an amenable number.

21022199053 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022199053 is an equidigital number, since it uses as much as digits as its factorization.

21022199053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 21022199053 in words is "twenty-one billion, twenty-two million, one hundred ninety-nine thousand, fifty-three".