120112212221 has 16 divisors (see below), whose sum is σ = 125519321088. Its totient is φ = 114801754800.

The previous prime is 120112212197. The next prime is 120112212247. The reversal of 120112212221 is 122212211021.

It is a cyclic number.

It is not a de Polignac number, because 120112212221 - 2³⁴ = 102932343037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120112212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120112214221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12682730 + ... + 12692196.

It is an arithmetic number, because the mean of its divisors is an integer number (7844957568).

Almost surely, 2^120112212221 is an apocalyptic number.

It is an amenable number.

120112212221 is a deficient number, since it is larger than the sum of its proper divisors (5407108867).

120112212221 is an equidigital number, since it uses as much as digits as its factorization.

120112212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14512.

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

Adding to 120112212221 its reverse (122212211021), we get a palindrome (242324423242).

The spelling of 120112212221 in words is "one hundred twenty billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty-one".