21022199063 has 2 divisors, whose sum is σ = 21022199064. Its totient is φ = 21022199062.

The previous prime is 21022199053. The next prime is 21022199069. The reversal of 21022199063 is 36099122012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21022199063 - 2⁴ = 21022199047 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21022199069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511099531 + 10511099532.

It is an arithmetic number, because the mean of its divisors is an integer number (10511099532).

Almost surely, 2^21022199063 is an apocalyptic number.

21022199063 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022199063 is an equidigital number, since it uses as much as digits as its factorization.

21022199063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 21022199063 in words is "twenty-one billion, twenty-two million, one hundred ninety-nine thousand, sixty-three".