112221221011021 has 4 divisors (see below), whose sum is σ = 112527000905152. Its totient is φ = 111915441116892.

The previous prime is 112221221011019. The next prime is 112221221011033. The reversal of 112221221011021 is 120110122122211.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 112221221011021 - 2¹ = 112221221011019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112221221011021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112221221018021) 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, 152889946515 + ... + 152889947248.

It is an arithmetic number, because the mean of its divisors is an integer number (28131750226288).

Almost surely, 2^{112221221011021} is an apocalyptic number.

It is an amenable number.

112221221011021 is a deficient number, since it is larger than the sum of its proper divisors (305779894131).

112221221011021 is an equidigital number, since it uses as much as digits as its factorization.

112221221011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305779894130.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 112221221011021 its reverse (120110122122211), we get a palindrome (232331343133232).

The spelling of 112221221011021 in words is "one hundred twelve trillion, two hundred twenty-one billion, two hundred twenty-one million, eleven thousand, twenty-one".