120021101200009 has 4 divisors (see below), whose sum is σ = 120251467997460. Its totient is φ = 119790734402560.

The previous prime is 120021101199917. The next prime is 120021101200031. The reversal of 120021101200009 is 900002101120021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55007068055625 + 65014033144384 = 7416675^2 + 8063128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120021101200009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120021101200309) 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, 115183397944 + ... + 115183398985.

It is an arithmetic number, because the mean of its divisors is an integer number (30062866999365).

Almost surely, 2^{120021101200009} is an apocalyptic number.

It is an amenable number.

120021101200009 is a deficient number, since it is larger than the sum of its proper divisors (230366797451).

120021101200009 is an equidigital number, since it uses as much as digits as its factorization.

120021101200009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230366797450.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 120021101200009 in words is "one hundred twenty trillion, twenty-one billion, one hundred one million, two hundred thousand, nine".