120122220209 has 16 divisors (see below), whose sum is σ = 123752025936. Its totient is φ = 116527257600.

The previous prime is 120122220181. The next prime is 120122220217. The reversal of 120122220209 is 902022221021.

It can be written as a sum of positive squares in 8 ways, for example, as 37132133809 + 82990086400 = 192697^2 + 288080^2 .

It is a cyclic number.

It is not a de Polignac number, because 120122220209 - 2³² = 115827252913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120122220289) 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, 6680459 + ... + 6698415.

It is an arithmetic number, because the mean of its divisors is an integer number (7734501621).

Almost surely, 2^120122220209 is an apocalyptic number.

It is an amenable number.

120122220209 is a deficient number, since it is larger than the sum of its proper divisors (3629805727).

120122220209 is a wasteful number, since it uses less digits than its factorization.

120122220209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18916.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 120122220209 in words is "one hundred twenty billion, one hundred twenty-two million, two hundred twenty thousand, two hundred nine".