112222122221 has 16 divisors (see below), whose sum is σ = 123708005568. Its totient is φ = 100951392000.

The previous prime is 112222122203. The next prime is 112222122227. The reversal of 112222122221 is 122221222211.

It is a cyclic number.

It is not a de Polignac number, because 112222122221 - 2²² = 112217927917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112222122193 and 112222122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112222122227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1945826 + ... + 2002668.

It is an arithmetic number, because the mean of its divisors is an integer number (7731750348).

Almost surely, 2^112222122221 is an apocalyptic number.

112222122221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112222122221 is a deficient number, since it is larger than the sum of its proper divisors (11485883347).

112222122221 is a wasteful number, since it uses less digits than its factorization.

112222122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58732.

The product of its digits is 256, while the sum is 20.

Adding to 112222122221 its reverse (122221222211), we get a palindrome (234443344432).

The spelling of 112222122221 in words is "one hundred twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-one".