213120330009 has 4 divisors (see below), whose sum is σ = 284160440016. Its totient is φ = 142080220004.

The previous prime is 213120329959. The next prime is 213120330023. The reversal of 213120330009 is 900033021312.

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 213120330009 - 2⁸ = 213120329753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213120330079) 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, 35520054999 + ... + 35520055004.

It is an arithmetic number, because the mean of its divisors is an integer number (71040110004).

Almost surely, 2^213120330009 is an apocalyptic number.

It is an amenable number.

213120330009 is a deficient number, since it is larger than the sum of its proper divisors (71040110007).

213120330009 is an equidigital number, since it uses as much as digits as its factorization.

213120330009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71040110006.

The product of its (nonzero) digits is 972, while the sum is 24.

The spelling of 213120330009 in words is "two hundred thirteen billion, one hundred twenty million, three hundred thirty thousand, nine".