122020218009 has 6 divisors (see below), whose sum is σ = 176251426026. Its totient is φ = 81346812000.

The previous prime is 122020218007. The next prime is 122020218029. The reversal of 122020218009 is 900812020221.

It can be written as a sum of positive squares in only one way, i.e., 116808099984 + 5212118025 = 341772^2 + 72195^2 .

It is not a de Polignac number, because 122020218009 - 2¹ = 122020218007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122020218007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6778900992 + ... + 6778901009.

It is an arithmetic number, because the mean of its divisors is an integer number (29375237671).

Almost surely, 2^122020218009 is an apocalyptic number.

It is an amenable number.

122020218009 is a deficient number, since it is larger than the sum of its proper divisors (54231208017).

122020218009 is a wasteful number, since it uses less digits than its factorization.

122020218009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13557802007 (or 13557802004 counting only the distinct ones).

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

The spelling of 122020218009 in words is "one hundred twenty-two billion, twenty million, two hundred eighteen thousand, nine".