220109999999 has 4 divisors (see below), whose sum is σ = 220112590320. Its totient is φ = 220107409680.

The previous prime is 220109999927. The next prime is 220110000001. The reversal of 220109999999 is 999999901022.

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

It is a cyclic number.

It is not a de Polignac number, because 220109999999 - 2⁸ = 220109999743 is a prime.

It is a Duffinian number.

220109999999 is a modest number, since divided by 999999 gives 220109 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220109999909) 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, 1163219 + ... + 1339140.

It is an arithmetic number, because the mean of its divisors is an integer number (55028147580).

Almost surely, 2^220109999999 is an apocalyptic number.

220109999999 is a deficient number, since it is larger than the sum of its proper divisors (2590321).

220109999999 is an equidigital number, since it uses as much as digits as its factorization.

220109999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590320.

The product of its (nonzero) digits is 19131876, while the sum is 68.

The spelling of 220109999999 in words is "two hundred twenty billion, one hundred nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".