21222200011009 has 16 divisors (see below), whose sum is σ = 21684489281280. Its totient is φ = 20760361332480.

The previous prime is 21222200011003. The next prime is 21222200011037. The reversal of 21222200011009 is 90011000222212.

It is a cyclic number.

It is not a de Polignac number, because 21222200011009 - 2²⁵ = 21222166456577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222200011003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1529741497 + ... + 1529755369.

It is an arithmetic number, because the mean of its divisors is an integer number (1355280580080).

Almost surely, 2^{21222200011009} is an apocalyptic number.

It is an amenable number.

21222200011009 is a deficient number, since it is larger than the sum of its proper divisors (462289270271).

21222200011009 is a wasteful number, since it uses less digits than its factorization.

21222200011009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27720.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 21222200011009 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred million, eleven thousand, nine".