22121063021 has 2 divisors, whose sum is σ = 22121063022. Its totient is φ = 22121063020.

The previous prime is 22121062993. The next prime is 22121063047. The reversal of 22121063021 is 12036012122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14223186121 + 7897876900 = 119261^2 + 88870^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121063021 - 2¹⁴ = 22121046637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22121062984 and 22121063002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121063071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060531510 + 11060531511.

It is an arithmetic number, because the mean of its divisors is an integer number (11060531511).

Almost surely, 2^22121063021 is an apocalyptic number.

It is an amenable number.

22121063021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121063021 is an equidigital number, since it uses as much as digits as its factorization.

22121063021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 22121063021 its reverse (12036012122), we get a palindrome (34157075143).

The spelling of 22121063021 in words is "twenty-two billion, one hundred twenty-one million, sixty-three thousand, twenty-one".