220100111 has 24 divisors (see below), whose sum is σ = 288962640. Its totient is φ = 165580800.

The previous prime is 220100099. The next prime is 220100117. The reversal of 220100111 is 111001022.

It is a de Polignac number, because none of the positive numbers 2^k-220100111 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 (220100117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8591 + ... + 22671.

It is an arithmetic number, because the mean of its divisors is an integer number (12040110).

Almost surely, 2^220100111 is an apocalyptic number.

220100111 is a deficient number, since it is larger than the sum of its proper divisors (68862529).

220100111 is a wasteful number, since it uses less digits than its factorization.

220100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14135 (or 14128 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 220100111 is about 14835.7713314812. The cubic root of 220100111 is about 603.7726281514.

Adding to 220100111 its reverse (111001022), we get a palindrome (331101133).

The spelling of 220100111 in words is "two hundred twenty million, one hundred thousand, one hundred eleven".