221111111122 has 32 divisors (see below), whose sum is σ = 373175195904. Its totient is φ = 97392672000.

The previous prime is 221111111113. The next prime is 221111111129.

221111111122 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 221111111096 and 221111111105.

It is not an unprimeable number, because it can be changed into a prime (221111111129) 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, 954183 + ... + 1163050.

It is an arithmetic number, because the mean of its divisors is an integer number (11661724872).

Almost surely, 2^221111111122 is an apocalyptic number.

221111111122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221111111122 is a deficient number, since it is larger than the sum of its proper divisors (152064084782).

221111111122 is a wasteful number, since it uses less digits than its factorization.

221111111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117394.

The product of its digits is 16, while the sum is 16.

It can be divided in two parts, 221111 and 111122, that added together give a palindrome (332233).

The spelling of 221111111122 in words is "two hundred twenty-one billion, one hundred eleven million, one hundred eleven thousand, one hundred twenty-two".