112122222122021 has 4 divisors (see below), whose sum is σ = 115988505643500. Its totient is φ = 108255938600544.

The previous prime is 112122222122017. The next prime is 112122222122047. The reversal of 112122222122021 is 120221222221211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48170692941121 + 63951529180900 = 6940511^2 + 7996970^2 .

It is a cyclic number.

It is not a de Polignac number, because 112122222122021 - 2² = 112122222122017 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 (112122222172021) 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, 1933141760696 + ... + 1933141760753.

It is an arithmetic number, because the mean of its divisors is an integer number (28997126410875).

Almost surely, 2^{112122222122021} is an apocalyptic number.

It is an amenable number.

112122222122021 is a deficient number, since it is larger than the sum of its proper divisors (3866283521479).

112122222122021 is an equidigital number, since it uses as much as digits as its factorization.

112122222122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3866283521478.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 112122222122021 its reverse (120221222221211), we get a palindrome (232343444343232).

The spelling of 112122222122021 in words is "one hundred twelve trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-two thousand, twenty-one".