210020120009 has 32 divisors (see below), whose sum is σ = 246683335680. Its totient is φ = 175096756800.

The previous prime is 210020119921. The next prime is 210020120027. The reversal of 210020120009 is 900021020012.

210020120009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210020120009 - 2²⁴ = 210003342793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210020120039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15068774 + ... + 15082704.

It is an arithmetic number, because the mean of its divisors is an integer number (7708854240).

Almost surely, 2^210020120009 is an apocalyptic number.

It is an amenable number.

210020120009 is a deficient number, since it is larger than the sum of its proper divisors (36663215671).

210020120009 is a wasteful number, since it uses less digits than its factorization.

210020120009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14381.

The product of its (nonzero) digits is 72, while the sum is 17.

The spelling of 210020120009 in words is "two hundred ten billion, twenty million, one hundred twenty thousand, nine".