221223312120009 has 32 divisors (see below), whose sum is σ = 323102676787200. Its totient is φ = 134205408564480.

The previous prime is 221223312120007. The next prime is 221223312120011. The reversal of 221223312120009 is 900021213322122.

221223312120009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221223312120007) and next prime (221223312120011).

It is not a de Polignac number, because 221223312120009 - 2¹ = 221223312120007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221223312120007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 876345904 + ... + 876598305.

It is an arithmetic number, because the mean of its divisors is an integer number (10096958649600).

Almost surely, 2^{221223312120009} is an apocalyptic number.

It is an amenable number.

221223312120009 is a deficient number, since it is larger than the sum of its proper divisors (101879364667191).

221223312120009 is a wasteful number, since it uses less digits than its factorization.

221223312120009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752944325.

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 221223312120009 in words is "two hundred twenty-one trillion, two hundred twenty-three billion, three hundred twelve million, one hundred twenty thousand, nine".