220122111 has 16 divisors (see below), whose sum is σ = 322829568. Its totient is φ = 133404920.

The previous prime is 220122101. The next prime is 220122131. The reversal of 220122111 is 111221022.

It is not a de Polignac number, because 220122111 - 2⁶ = 220122047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220122101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23571 + ... + 31556.

It is an arithmetic number, because the mean of its divisors is an integer number (20176848).

Almost surely, 2^220122111 is an apocalyptic number.

220122111 is a deficient number, since it is larger than the sum of its proper divisors (102707457).

220122111 is an equidigital number, since it uses as much as digits as its factorization.

220122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55163 (or 55141 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 220122111 is about 14836.5127641235. The cubic root of 220122111 is about 603.7927440814.

Adding to 220122111 its reverse (111221022), we get a palindrome (331343133).

The spelling of 220122111 in words is "two hundred twenty million, one hundred twenty-two thousand, one hundred eleven".