220101112111 has 4 divisors (see below), whose sum is σ = 220978009224. Its totient is φ = 219224215000.

The previous prime is 220101112081. The next prime is 220101112123. The reversal of 220101112111 is 111211101022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220101112111 - 2⁵ = 220101112079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220101112091 and 220101112100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220101112151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438448180 + ... + 438448681.

It is an arithmetic number, because the mean of its divisors is an integer number (55244502306).

Almost surely, 2^220101112111 is an apocalyptic number.

220101112111 is a deficient number, since it is larger than the sum of its proper divisors (876897113).

220101112111 is an equidigital number, since it uses as much as digits as its factorization.

220101112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876897112.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 220101112111 its reverse (111211101022), we get a palindrome (331312213133).

It can be divided in two parts, 2201011 and 12111, that added together give a palindrome (2213122).

The spelling of 220101112111 in words is "two hundred twenty billion, one hundred one million, one hundred twelve thousand, one hundred eleven".