120120222221 has 4 divisors (see below), whose sum is σ = 126442339200. Its totient is φ = 113798105244.

The previous prime is 120120222169. The next prime is 120120222227. The reversal of 120120222221 is 122222021021.

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: 122222021021 = 29 ⋅4214552449.

It is a cyclic number.

It is not a de Polignac number, because 120120222221 - 2³⁴ = 102940353037 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 120120222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120120222227) 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, 3161058461 + ... + 3161058498.

It is an arithmetic number, because the mean of its divisors is an integer number (31610584800).

Almost surely, 2^120120222221 is an apocalyptic number.

It is an amenable number.

120120222221 is a deficient number, since it is larger than the sum of its proper divisors (6322116979).

120120222221 is an equidigital number, since it uses as much as digits as its factorization.

120120222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6322116978.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 120120222221 its reverse (122222021021), we get a palindrome (242342243242).

The spelling of 120120222221 in words is "one hundred twenty billion, one hundred twenty million, two hundred twenty-two thousand, two hundred twenty-one".