220256111 has 4 divisors (see below), whose sum is σ = 223273392. Its totient is φ = 217238832.

The previous prime is 220256107. The next prime is 220256117. The reversal of 220256111 is 111652022.

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 220256111 - 2² = 220256107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220256117) 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, 1508531 + ... + 1508676.

It is an arithmetic number, because the mean of its divisors is an integer number (55818348).

Almost surely, 2^220256111 is an apocalyptic number.

220256111 is a deficient number, since it is larger than the sum of its proper divisors (3017281).

220256111 is an equidigital number, since it uses as much as digits as its factorization.

220256111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017280.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 220256111 is about 14841.0279630489. The cubic root of 220256111 is about 603.9152394473.

It can be divided in two parts, 220 and 256111, that multiplied together give a triangular number (56344420 = T₁₀₆₁₅).

The spelling of 220256111 in words is "two hundred twenty million, two hundred fifty-six thousand, one hundred eleven".