22112100111209 has 8 divisors (see below), whose sum is σ = 22116898256040. Its totient is φ = 22107302424576.

The previous prime is 22112100111149. The next prime is 22112100111259. The reversal of 22112100111209 is 90211100121122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1007925642025 + 21104174469184 = 1003955^2 + 4593928^2 .

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 22112100111209 - 2⁸ = 22112100110953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22112100111259) 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, 107045177 + ... + 107251545.

It is an arithmetic number, because the mean of its divisors is an integer number (2764612282005).

Almost surely, 2^{22112100111209} is an apocalyptic number.

It is an amenable number.

22112100111209 is a deficient number, since it is larger than the sum of its proper divisors (4798144831).

22112100111209 is a wasteful number, since it uses less digits than its factorization.

22112100111209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229099.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 22112100111209 in words is "twenty-two trillion, one hundred twelve billion, one hundred million, one hundred eleven thousand, two hundred nine".