22000010122021 has 2 divisors, whose sum is σ = 22000010122022. Its totient is φ = 22000010122020.

The previous prime is 22000010121977. The next prime is 22000010122067. The reversal of 22000010122021 is 12022101000022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14443146571396 + 7556863550625 = 3800414^2 + 2748975^2 .

It is a cyclic number.

It is not a de Polignac number, because 22000010122021 - 2³¹ = 21997862638373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22000010121992 and 22000010122010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22000010122081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000005061010 + 11000005061011.

It is an arithmetic number, because the mean of its divisors is an integer number (11000005061011).

Almost surely, 2^{22000010122021} is an apocalyptic number.

It is an amenable number.

22000010122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22000010122021 is an equidigital number, since it uses as much as digits as its factorization.

22000010122021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22000010122021 its reverse (12022101000022), we get a palindrome (34022111122043).

The spelling of 22000010122021 in words is "twenty-two trillion, ten million, one hundred twenty-two thousand, twenty-one".