1122211122209 has 8 divisors (see below), whose sum is σ = 1122971183880. Its totient is φ = 1121451319296.

The previous prime is 1122211122181. The next prime is 1122211122259. The reversal of 1122211122209 is 9022211122211.

It can be written as a sum of positive squares in 4 ways, for example, as 111325659025 + 1010885463184 = 333655^2 + 1005428^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1122211122209 - 2¹² = 1122211118113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122211122259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9040637 + ... + 9163925.

It is an arithmetic number, because the mean of its divisors is an integer number (140371397985).

Almost surely, 2^{1122211122209} is an apocalyptic number.

It is an amenable number.

1122211122209 is a deficient number, since it is larger than the sum of its proper divisors (760061671).

1122211122209 is a wasteful number, since it uses less digits than its factorization.

1122211122209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129379.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 1122211122209 in words is "one trillion, one hundred twenty-two billion, two hundred eleven million, one hundred twenty-two thousand, two hundred nine".