120225221 has 4 divisors (see below), whose sum is σ = 120247200. Its totient is φ = 120203244.

The previous prime is 120225211. The next prime is 120225227. The reversal of 120225221 is 122522021.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 122522021 = 1093 ⋅112097.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120225221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120225221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120225227) 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, 4400 + ... + 16118.

It is an arithmetic number, because the mean of its divisors is an integer number (30061800).

Almost surely, 2^120225221 is an apocalyptic number.

It is an amenable number.

120225221 is a deficient number, since it is larger than the sum of its proper divisors (21979).

120225221 is a wasteful number, since it uses less digits than its factorization.

120225221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21978.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 120225221 is about 10964.7262163722. The cubic root of 120225221 is about 493.5508013210.

Adding to 120225221 its reverse (122522021), we get a palindrome (242747242).

The spelling of 120225221 in words is "one hundred twenty million, two hundred twenty-five thousand, two hundred twenty-one".