22102022021 has 2 divisors, whose sum is σ = 22102022022. Its totient is φ = 22102022020.

The previous prime is 22102021993. The next prime is 22102022029. The reversal of 22102022021 is 12022020122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12422217025 + 9679804996 = 111455^2 + 98386^2 .

It is a cyclic number.

It is not a de Polignac number, because 22102022021 - 2¹⁸ = 22101759877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22102021987 and 22102022005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22102022029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11051011010 + 11051011011.

It is an arithmetic number, because the mean of its divisors is an integer number (11051011011).

Almost surely, 2^22102022021 is an apocalyptic number.

It is an amenable number.

22102022021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22102022021 is an equidigital number, since it uses as much as digits as its factorization.

22102022021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22102022021 its reverse (12022020122), we get a palindrome (34124042143).

The spelling of 22102022021 in words is "twenty-two billion, one hundred two million, twenty-two thousand, twenty-one".