12120022100009 has 4 divisors (see below), whose sum is σ = 12510990554880. Its totient is φ = 11729053645140.

The previous prime is 12120022099919. The next prime is 12120022100059. The reversal of 12120022100009 is 90000122002121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12120022100009 - 2²⁰ = 12120021051433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12120022100059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195484227389 + ... + 195484227450.

It is an arithmetic number, because the mean of its divisors is an integer number (3127747638720).

Almost surely, 2^{12120022100009} is an apocalyptic number.

It is an amenable number.

12120022100009 is a deficient number, since it is larger than the sum of its proper divisors (390968454871).

12120022100009 is an equidigital number, since it uses as much as digits as its factorization.

12120022100009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390968454870.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 12120022100009 in words is "twelve trillion, one hundred twenty billion, twenty-two million, one hundred thousand, nine".