122211221220009 has 20 divisors (see below), whose sum is σ = 182568670187904. Its totient is φ = 81471367768824.

The previous prime is 122211221219957. The next prime is 122211221220073. The reversal of 122211221220009 is 900022122112221.

122211221220009 is a `hidden beast` number, since 1 + 2 + 2 + 211 + 221 + 220 + 0 + 0 + 9 = 666.

It is not a de Polignac number, because 122211221220009 - 2¹² = 122211221215913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (122211221220509) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23347917 + ... + 28098890.

Almost surely, 2^{122211221220009} is an apocalyptic number.

It is an amenable number.

122211221220009 is a deficient number, since it is larger than the sum of its proper divisors (60357448967895).

122211221220009 is an equidigital number, since it uses as much as digits as its factorization.

122211221220009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51476146 (or 51476137 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 122211221220009 in words is "one hundred twenty-two trillion, two hundred eleven billion, two hundred twenty-one million, two hundred twenty thousand, nine".