22220111112209 has 2 divisors, whose sum is σ = 22220111112210. Its totient is φ = 22220111112208.

The previous prime is 22220111112181. The next prime is 22220111112257. The reversal of 22220111112209 is 90221111102222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11255588854225 + 10964522257984 = 3354935^2 + 3311272^2 .

It is a cyclic number.

It is not a de Polignac number, because 22220111112209 - 2¹⁶ = 22220111046673 is a prime.

It is not a weakly prime, because it can be changed into another prime (22220111114209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110055556104 + 11110055556105.

It is an arithmetic number, because the mean of its divisors is an integer number (11110055556105).

Almost surely, 2^{22220111112209} is an apocalyptic number.

It is an amenable number.

22220111112209 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220111112209 is an equidigital number, since it uses as much as digits as its factorization.

22220111112209 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 26.

The spelling of 22220111112209 in words is "twenty-two trillion, two hundred twenty billion, one hundred eleven million, one hundred twelve thousand, two hundred nine".