21222102022207 has 2 divisors, whose sum is σ = 21222102022208. Its totient is φ = 21222102022206.

The previous prime is 21222102022159. The next prime is 21222102022337. The reversal of 21222102022207 is 70222020122212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222102022207 is a prime.

It is a super-2 number, since 2×21222102022207² (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 (21222102022507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611051011103 + 10611051011104.

It is an arithmetic number, because the mean of its divisors is an integer number (10611051011104).

Almost surely, 2^{21222102022207} is an apocalyptic number.

21222102022207 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222102022207 is an equidigital number, since it uses as much as digits as its factorization.

21222102022207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 25.

Adding to 21222102022207 its reverse (70222020122212), we get a palindrome (91444122144419).

The spelling of 21222102022207 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred two million, twenty-two thousand, two hundred seven".