120002221 has 4 divisors (see below), whose sum is σ = 120311100. Its totient is φ = 119693344.

The previous prime is 120002213. The next prime is 120002237. The reversal of 120002221 is 122200021.

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 44555625 + 75446596 = 6675^2 + 8686^2 .

It is a cyclic number.

It is not a de Polignac number, because 120002221 - 2³ = 120002213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120002198 and 120002207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120002021) 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, 153856 + ... + 154633.

It is an arithmetic number, because the mean of its divisors is an integer number (30077775).

Almost surely, 2^120002221 is an apocalyptic number.

It is an amenable number.

120002221 is a deficient number, since it is larger than the sum of its proper divisors (308879).

120002221 is an equidigital number, since it uses as much as digits as its factorization.

120002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308878.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 120002221 is about 10954.5525239509. The cubic root of 120002221 is about 493.2454578790.

Adding to 120002221 its reverse (122200021), we get a palindrome (242202242).

The spelling of 120002221 in words is "one hundred twenty million, two thousand, two hundred twenty-one".