1022211122209 has 2 divisors, whose sum is σ = 1022211122210. Its totient is φ = 1022211122208.

The previous prime is 1022211122167. The next prime is 1022211122243. The reversal of 1022211122209 is 9022211122201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016523699984 + 5687422225 = 1008228^2 + 75415^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022211122209 - 2⁷ = 1022211122081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022211122249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511105561104 + 511105561105.

It is an arithmetic number, because the mean of its divisors is an integer number (511105561105).

Almost surely, 2^{1022211122209} is an apocalyptic number.

It is an amenable number.

1022211122209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022211122209 is an equidigital number, since it uses as much as digits as its factorization.

1022211122209 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 25.

The spelling of 1022211122209 in words is "one trillion, twenty-two billion, two hundred eleven million, one hundred twenty-two thousand, two hundred nine".