220331210111009 has 4 divisors (see below), whose sum is σ = 222806841685380. Its totient is φ = 217855578536640.

The previous prime is 220331210110951. The next prime is 220331210111021. The reversal of 220331210111009 is 900111012133022.

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 43002117760000 + 177329092351009 = 6557600^2 + 13316497^2 .

It is a cyclic number.

It is not a de Polignac number, because 220331210111009 - 2²⁸ = 220330941675553 is a prime.

It is a super-3 number, since 3×220331210111009³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220331210111039) 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, 1237815787052 + ... + 1237815787229.

It is an arithmetic number, because the mean of its divisors is an integer number (55701710421345).

Almost surely, 2^{220331210111009} is an apocalyptic number.

It is an amenable number.

220331210111009 is a deficient number, since it is larger than the sum of its proper divisors (2475631574371).

220331210111009 is an equidigital number, since it uses as much as digits as its factorization.

220331210111009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475631574370.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 220331210111009 in words is "two hundred twenty trillion, three hundred thirty-one billion, two hundred ten million, one hundred eleven thousand, nine".