112222012221021 has 4 divisors (see below), whose sum is σ = 149629349628032. Its totient is φ = 74814674814012.

The previous prime is 112222012220953. The next prime is 112222012221043. The reversal of 112222012221021 is 120122210222211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 112222012221021 - 2²⁶ = 112221945112157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112222012221721) 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, 18703668703501 + ... + 18703668703506.

It is an arithmetic number, because the mean of its divisors is an integer number (37407337407008).

Almost surely, 2^{112222012221021} is an apocalyptic number.

It is an amenable number.

112222012221021 is a deficient number, since it is larger than the sum of its proper divisors (37407337407011).

112222012221021 is an equidigital number, since it uses as much as digits as its factorization.

112222012221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37407337407010.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 112222012221021 its reverse (120122210222211), we get a palindrome (232344222443232).

The spelling of 112222012221021 in words is "one hundred twelve trillion, two hundred twenty-two billion, twelve million, two hundred twenty-one thousand, twenty-one".