220102111 has 12 divisors (see below), whose sum is σ = 243983952. Its totient is φ = 198142208.

The previous prime is 220102027. The next prime is 220102117. The reversal of 220102111 is 111201022.

It is a de Polignac number, because none of the positive numbers 2^k-220102111 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 (220102117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9910 + ... + 23203.

It is an arithmetic number, because the mean of its divisors is an integer number (20331996).

Almost surely, 2^220102111 is an apocalyptic number.

220102111 is a deficient number, since it is larger than the sum of its proper divisors (23881841).

220102111 is a wasteful number, since it uses less digits than its factorization.

220102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33170 (or 33153 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 220102111 is about 14835.8387359798. The cubic root of 220102111 is about 603.7744569277.

Adding to 220102111 its reverse (111201022), we get a palindrome (331303133).

The spelling of 220102111 in words is "two hundred twenty million, one hundred two thousand, one hundred eleven".