220868111 has 2 divisors, whose sum is σ = 220868112. Its totient is φ = 220868110.

The previous prime is 220868083. The next prime is 220868159. The reversal of 220868111 is 111868022.

220868111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220868111 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220868311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110434055 + 110434056.

It is an arithmetic number, because the mean of its divisors is an integer number (110434056).

Almost surely, 2^220868111 is an apocalyptic number.

220868111 is a deficient number, since it is larger than the sum of its proper divisors (1).

220868111 is an equidigital number, since it uses as much as digits as its factorization.

220868111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 220868111 is about 14861.6321781963. The cubic root of 220868111 is about 604.4740651622.

The spelling of 220868111 in words is "two hundred twenty million, eight hundred sixty-eight thousand, one hundred eleven".