220120111 has 6 divisors (see below), whose sum is σ = 232315512. Its totient is φ = 208534500.

The previous prime is 220120081. The next prime is 220120127. The reversal of 220120111 is 111021022.

It is not a de Polignac number, because 220120111 - 2¹³ = 220111919 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 (220120171) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 304515 + ... + 305236.

It is an arithmetic number, because the mean of its divisors is an integer number (38719252).

Almost surely, 2^220120111 is an apocalyptic number.

220120111 is a deficient number, since it is larger than the sum of its proper divisors (12195401).

220120111 is an equidigital number, since it uses as much as digits as its factorization.

220120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609789 (or 609770 counting only the distinct ones).

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

The square root of 220120111 is about 14836.4453626871. The cubic root of 220120111 is about 603.7909154159.

Adding to 220120111 its reverse (111021022), we get a palindrome (331141133).

The spelling of 220120111 in words is "two hundred twenty million, one hundred twenty thousand, one hundred eleven".