220101111111 has 32 divisors (see below), whose sum is σ = 355238231040. Its totient is φ = 118334670336.

The previous prime is 220101111101. The next prime is 220101111143. The reversal of 220101111111 is 111111101022.

It is not a de Polignac number, because 220101111111 - 2¹⁷ = 220100980039 is a prime.

It is a super-2 number, since 2×220101111111² (a number of 23 digits) contains 22 as substring.

220101111111 is a modest number, since divided by 1111111 gives 22010 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220101111101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 999085 + ... + 1199321.

It is an arithmetic number, because the mean of its divisors is an integer number (11101194720).

Almost surely, 2^220101111111 is an apocalyptic number.

220101111111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

220101111111 is a deficient number, since it is larger than the sum of its proper divisors (135137119929).

220101111111 is a wasteful number, since it uses less digits than its factorization.

220101111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203343.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 220101111111 its reverse (111111101022), we get a palindrome (331212212133).

It can be divided in two parts, 2201011 and 11111, that added together give a palindrome (2212122).

The spelling of 220101111111 in words is "two hundred twenty billion, one hundred one million, one hundred eleven thousand, one hundred eleven".