220111111111111 has 8 divisors (see below), whose sum is σ = 240472780521984. Its totient is φ = 199808036433720.

The previous prime is 220111111111091. The next prime is 220111111111153. The reversal of 220111111111111 is 111111111111022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220111111111111 - 2²⁷ = 220110976893383 is a prime.

It is a Duffinian number.

220111111111111 is a modest number, since divided by 11111111 gives 2201111 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111111112111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14648675511 + ... + 14648690536.

It is an arithmetic number, because the mean of its divisors is an integer number (30059097565248).

Almost surely, 2^{220111111111111} is an apocalyptic number.

220111111111111 is a deficient number, since it is larger than the sum of its proper divisors (20361669410873).

220111111111111 is a wasteful number, since it uses less digits than its factorization.

220111111111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29297366741.

The product of its (nonzero) digits is 4, while the sum is 16.

Adding to 220111111111111 its reverse (111111111111022), we get a palindrome (331222222222133).

The spelling of 220111111111111 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred eleven".