12120622209 has 24 divisors (see below), whose sum is σ = 18590925600. Its totient is φ = 7583146368.

The previous prime is 12120622193. The next prime is 12120622211. The reversal of 12120622209 is 90222602121.

It is a happy number.

12120622209 is a `hidden beast` number, since 1 + 2 + 12 + 0 + 622 + 20 + 9 = 666.

It is not a de Polignac number, because 12120622209 - 2⁴ = 12120622193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12120622229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61059 + ... + 167240.

It is an arithmetic number, because the mean of its divisors is an integer number (774621900).

Almost surely, 2^12120622209 is an apocalyptic number.

It is an amenable number.

12120622209 is a deficient number, since it is larger than the sum of its proper divisors (6470303391).

12120622209 is a wasteful number, since it uses less digits than its factorization.

12120622209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228669 (or 228666 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 12120622209 in words is "twelve billion, one hundred twenty million, six hundred twenty-two thousand, two hundred nine".