222120012009 has 32 divisors (see below), whose sum is σ = 342720967680. Its totient is φ = 125332638912.

The previous prime is 222120011977. The next prime is 222120012083. The reversal of 222120012009 is 900210021222.

It is a happy number.

It is not a de Polignac number, because 222120012009 - 2⁵ = 222120011977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (222120012089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3501627 + ... + 3564495.

It is an arithmetic number, because the mean of its divisors is an integer number (10710030240).

Almost surely, 2^222120012009 is an apocalyptic number.

It is an amenable number.

222120012009 is a deficient number, since it is larger than the sum of its proper divisors (120600955671).

222120012009 is a wasteful number, since it uses less digits than its factorization.

222120012009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64989.

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 222120012009 in words is "two hundred twenty-two billion, one hundred twenty million, twelve thousand, nine".