220020111 has 16 divisors (see below), whose sum is σ = 326227200. Its totient is φ = 146557944.

The previous prime is 220020091. The next prime is 220020149. The reversal of 220020111 is 111020022.

It is not a de Polignac number, because 220020111 - 2⁵ = 220020079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 220020093 and 220020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220020191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39480 + ... + 44706.

It is an arithmetic number, because the mean of its divisors is an integer number (20389200).

Almost surely, 2^220020111 is an apocalyptic number.

220020111 is a deficient number, since it is larger than the sum of its proper divisors (106207089).

220020111 is a wasteful number, since it uses less digits than its factorization.

220020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6795 (or 6789 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 220020111 is about 14833.0749003705. The cubic root of 220020111 is about 603.6994680133.

Adding to 220020111 its reverse (111020022), we get a palindrome (331040133).

The spelling of 220020111 in words is "two hundred twenty million, twenty thousand, one hundred eleven".