12213123009 has 16 divisors (see below), whose sum is σ = 16685875584. Its totient is φ = 7941334400.

The previous prime is 12213123001. The next prime is 12213123049. The reversal of 12213123009 is 90032131221.

It is a cyclic number.

It is not a de Polignac number, because 12213123009 - 2³ = 12213123001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12213123009.

It is not an unprimeable number, because it can be changed into a prime (12213123001) 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, 528787 + ... + 551399.

It is an arithmetic number, because the mean of its divisors is an integer number (1042867224).

Almost surely, 2^12213123009 is an apocalyptic number.

It is an amenable number.

12213123009 is a deficient number, since it is larger than the sum of its proper divisors (4472752575).

12213123009 is a wasteful number, since it uses less digits than its factorization.

12213123009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27048.

The product of its (nonzero) digits is 648, while the sum is 24.

The spelling of 12213123009 in words is "twelve billion, two hundred thirteen million, one hundred twenty-three thousand, nine".