120224421 has 24 divisors (see below), whose sum is σ = 176772960. Its totient is φ = 78723936.

The previous prime is 120224353. The next prime is 120224437. The reversal of 120224421 is 124422021.

120224421 is a `hidden beast` number, since 1 + 20 + 224 + 421 = 666.

It is not a de Polignac number, because 120224421 - 2²³ = 111835813 is a prime.

It is a super-2 number, since 2×120224421² = 28907822809570482, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120224394 and 120224403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120224821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169215 + ... + 169923.

It is an arithmetic number, because the mean of its divisors is an integer number (7365540).

Almost surely, 2^120224421 is an apocalyptic number.

It is an amenable number.

120224421 is a deficient number, since it is larger than the sum of its proper divisors (56548539).

120224421 is a wasteful number, since it uses less digits than its factorization.

120224421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 120224421 is about 10964.6897356925. The cubic root of 120224421 is about 493.5497065936.

Adding to 120224421 its reverse (124422021), we get a palindrome (244646442).

The spelling of 120224421 in words is "one hundred twenty million, two hundred twenty-four thousand, four hundred twenty-one".