120102221 has 4 divisors (see below), whose sum is σ = 120219744. Its totient is φ = 119984700.

The previous prime is 120102209. The next prime is 120102239. The reversal of 120102221 is 122201021.

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: 122201021 = 769 ⋅158909.

It is a cyclic number.

It is not a de Polignac number, because 120102221 - 2¹⁴ = 120085837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120102121) 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, 57215 + ... + 59276.

It is an arithmetic number, because the mean of its divisors is an integer number (30054936).

Almost surely, 2^120102221 is an apocalyptic number.

It is an amenable number.

120102221 is a deficient number, since it is larger than the sum of its proper divisors (117523).

120102221 is a wasteful number, since it uses less digits than its factorization.

120102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117522.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 120102221 is about 10959.1158858733. The cubic root of 120102221 is about 493.3824299303.

Adding to 120102221 its reverse (122201021), we get a palindrome (242303242).

The spelling of 120102221 in words is "one hundred twenty million, one hundred two thousand, two hundred twenty-one".