21222000220207 has 2 divisors, whose sum is σ = 21222000220208. Its totient is φ = 21222000220206.

The previous prime is 21222000220177. The next prime is 21222000220259. The reversal of 21222000220207 is 70202200022212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21222000220207 - 2⁷ = 21222000220079 is a prime.

It is a super-2 number, since 2×21222000220207² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222000220297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611000110103 + 10611000110104.

It is an arithmetic number, because the mean of its divisors is an integer number (10611000110104).

Almost surely, 2^{21222000220207} is an apocalyptic number.

21222000220207 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222000220207 is an equidigital number, since it uses as much as digits as its factorization.

21222000220207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 22.

Adding to 21222000220207 its reverse (70202200022212), we get a palindrome (91424200242419).

The spelling of 21222000220207 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred twenty thousand, two hundred seven".