112221212028 has 12 divisors (see below), whose sum is σ = 261849494760. Its totient is φ = 37407070672.

The previous prime is 112221212017. The next prime is 112221212029. The reversal of 112221212028 is 820212122211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 112221211989 and 112221212007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112221212029) 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, 4675883823 + ... + 4675883846.

It is an arithmetic number, because the mean of its divisors is an integer number (21820791230).

Almost surely, 2^112221212028 is an apocalyptic number.

It is an amenable number.

112221212028 is an abundant number, since it is smaller than the sum of its proper divisors (149628282732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

112221212028 is a wasteful number, since it uses less digits than its factorization.

112221212028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9351767676 (or 9351767674 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

Adding to 112221212028 its reverse (820212122211), we get a palindrome (932433334239).

The spelling of 112221212028 in words is "one hundred twelve billion, two hundred twenty-one million, two hundred twelve thousand, twenty-eight".