112122221021 has 4 divisors (see below), whose sum is σ = 112482742944. Its totient is φ = 111761699100.

The previous prime is 112122220999. The next prime is 112122221023. The reversal of 112122221021 is 120122221211.

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 112122221021 - 2¹⁰ = 112122219997 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 (112122221023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180260495 + ... + 180261116.

It is an arithmetic number, because the mean of its divisors is an integer number (28120685736).

Almost surely, 2^112122221021 is an apocalyptic number.

It is an amenable number.

112122221021 is a deficient number, since it is larger than the sum of its proper divisors (360521923).

112122221021 is an equidigital number, since it uses as much as digits as its factorization.

112122221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360521922.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 112122221021 its reverse (120122221211), we get a palindrome (232244442232).

The spelling of 112122221021 in words is "one hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, twenty-one".