12122111009 has 8 divisors (see below), whose sum is σ = 12582286080. Its totient is φ = 11666257200.

The previous prime is 12122110921. The next prime is 12122111059. The reversal of 12122111009 is 90011122121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12122111009 - 2⁸ = 12122110753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122111059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1074599 + ... + 1085820.

It is an arithmetic number, because the mean of its divisors is an integer number (1572785760).

Almost surely, 2^12122111009 is an apocalyptic number.

It is an amenable number.

12122111009 is a deficient number, since it is larger than the sum of its proper divisors (460175071).

12122111009 is a wasteful number, since it uses less digits than its factorization.

12122111009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160631.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 12122111009 in words is "twelve billion, one hundred twenty-two million, one hundred eleven thousand, nine".