1022112209 has 2 divisors, whose sum is σ = 1022112210. Its totient is φ = 1022112208.

The previous prime is 1022112197. The next prime is 1022112229. The reversal of 1022112209 is 9022112201.

It is a happy number.

It is an a-pointer prime, because the next prime (1022112229) can be obtained adding 1022112209 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 952339600 + 69772609 = 30860^2 + 8353^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022112209 - 2²⁸ = 753676753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022112229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511056104 + 511056105.

It is an arithmetic number, because the mean of its divisors is an integer number (511056105).

Almost surely, 2^1022112209 is an apocalyptic number.

It is an amenable number.

1022112209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022112209 is an equidigital number, since it uses as much as digits as its factorization.

1022112209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1022112209 is about 31970.4896584334. The cubic root of 1022112209 is about 1007.3170662903.

The spelling of 1022112209 in words is "one billion, twenty-two million, one hundred twelve thousand, two hundred nine".