112222020121 has 4 divisors (see below), whose sum is σ = 113041159092. Its totient is φ = 111402881152.

The previous prime is 112222020101. The next prime is 112222020133. The reversal of 112222020121 is 121020222211.

It is a happy number.

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 29390302096 + 82831718025 = 171436^2 + 287805^2 .

It is a cyclic number.

It is not a de Polignac number, because 112222020121 - 2⁵ = 112222020089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112222020095 and 112222020104.

It is not an unprimeable number, because it can be changed into a prime (112222020101) 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, 409569280 + ... + 409569553.

It is an arithmetic number, because the mean of its divisors is an integer number (28260289773).

Almost surely, 2^112222020121 is an apocalyptic number.

It is an amenable number.

112222020121 is a deficient number, since it is larger than the sum of its proper divisors (819138971).

112222020121 is an equidigital number, since it uses as much as digits as its factorization.

112222020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819138970.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 112222020121 its reverse (121020222211), we get a palindrome (233242242332).

The spelling of 112222020121 in words is "one hundred twelve billion, two hundred twenty-two million, twenty thousand, one hundred twenty-one".