112222221021 has 6 divisors (see below), whose sum is σ = 162098763710. Its totient is φ = 74814814008.

The previous prime is 112222221017. The next prime is 112222221031. The reversal of 112222221021 is 120122222211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 88007748921 + 24214472100 = 296661^2 + 155610^2 .

It is not a de Polignac number, because 112222221021 - 2² = 112222221017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112222220985 and 112222221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112222221031) 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, 6234567826 + ... + 6234567843.

Almost surely, 2^112222221021 is an apocalyptic number.

It is an amenable number.

112222221021 is a deficient number, since it is larger than the sum of its proper divisors (49876542689).

112222221021 is a wasteful number, since it uses less digits than its factorization.

112222221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12469135675 (or 12469135672 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 112222221021 its reverse (120122222211), we get a palindrome (232344443232).

The spelling of 112222221021 in words is "one hundred twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, twenty-one".