120012122221 has 4 divisors (see below), whose sum is σ = 120198766912. Its totient is φ = 119825477532.

The previous prime is 120012122161. The next prime is 120012122261. The reversal of 120012122221 is 122221210021.

It is a happy number.

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: 122221210021 = 5209 ⋅23463469.

It is a cyclic number.

It is not a de Polignac number, because 120012122221 - 2²⁵ = 119978567789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120012122195 and 120012122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120012122261) 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, 93321381 + ... + 93322666.

It is an arithmetic number, because the mean of its divisors is an integer number (30049691728).

Almost surely, 2^120012122221 is an apocalyptic number.

It is an amenable number.

120012122221 is a deficient number, since it is larger than the sum of its proper divisors (186644691).

120012122221 is an equidigital number, since it uses as much as digits as its factorization.

120012122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186644690.

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

Adding to 120012122221 its reverse (122221210021), we get a palindrome (242233332242).

The spelling of 120012122221 in words is "one hundred twenty billion, twelve million, one hundred twenty-two thousand, two hundred twenty-one".