22021202012209 has 2 divisors, whose sum is σ = 22021202012210. Its totient is φ = 22021202012208.

The previous prime is 22021202012153. The next prime is 22021202012279. The reversal of 22021202012209 is 90221020212022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21862357518400 + 158844493809 = 4675720^2 + 398553^2 .

It is a cyclic number.

It is not a de Polignac number, because 22021202012209 - 2²³ = 22021193623601 is a prime.

It is not a weakly prime, because it can be changed into another prime (22021202012279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010601006104 + 11010601006105.

It is an arithmetic number, because the mean of its divisors is an integer number (11010601006105).

Almost surely, 2^{22021202012209} is an apocalyptic number.

It is an amenable number.

22021202012209 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021202012209 is an equidigital number, since it uses as much as digits as its factorization.

22021202012209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 22021202012209 in words is "twenty-two trillion, twenty-one billion, two hundred two million, twelve thousand, two hundred nine".