22200021221009 has 2 divisors, whose sum is σ = 22200021221010. Its totient is φ = 22200021221008.

The previous prime is 22200021220991. The next prime is 22200021221039. The reversal of 22200021221009 is 90012212000222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18807591379984 + 3392429841025 = 4336772^2 + 1841855^2 .

It is a cyclic number.

It is not a de Polignac number, because 22200021221009 - 2⁸ = 22200021220753 is a prime.

It is not a weakly prime, because it can be changed into another prime (22200021221039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100010610504 + 11100010610505.

It is an arithmetic number, because the mean of its divisors is an integer number (11100010610505).

Almost surely, 2^{22200021221009} is an apocalyptic number.

It is an amenable number.

22200021221009 is a deficient number, since it is larger than the sum of its proper divisors (1).

22200021221009 is an equidigital number, since it uses as much as digits as its factorization.

22200021221009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 22200021221009 in words is "twenty-two trillion, two hundred billion, twenty-one million, two hundred twenty-one thousand, nine".