120112112221 has 4 divisors (see below), whose sum is σ = 120614673600. Its totient is φ = 119609550844.

The previous prime is 120112112213. The next prime is 120112112251. The reversal of 120112112221 is 122211211021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122211211021 = 3343 ⋅36557347.

It is a cyclic number.

It is not a de Polignac number, because 120112112221 - 2³ = 120112112213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120112112195 and 120112112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120112112251) 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, 251280331 + ... + 251280808.

It is an arithmetic number, because the mean of its divisors is an integer number (30153668400).

Almost surely, 2^120112112221 is an apocalyptic number.

It is an amenable number.

120112112221 is a deficient number, since it is larger than the sum of its proper divisors (502561379).

120112112221 is an equidigital number, since it uses as much as digits as its factorization.

120112112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502561378.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120112112221 its reverse (122211211021), we get a palindrome (242323323242).

The spelling of 120112112221 in words is "one hundred twenty billion, one hundred twelve million, one hundred twelve thousand, two hundred twenty-one".