120242221 has 8 divisors (see below), whose sum is σ = 131590944. Its totient is φ = 108963120.

The previous prime is 120242209. The next prime is 120242237. The reversal of 120242221 is 122242021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120242221 - 2¹¹ = 120240173 is a prime.

It is a super-2 number, since 2×120242221² = 28916383422025682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120242195 and 120242204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120242201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13755 + ... + 20728.

It is an arithmetic number, because the mean of its divisors is an integer number (16448868).

Almost surely, 2^120242221 is an apocalyptic number.

120242221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120242221 is a deficient number, since it is larger than the sum of its proper divisors (11348723).

120242221 is a wasteful number, since it uses less digits than its factorization.

120242221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34811.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 120242221 is about 10965.5014021248. The cubic root of 120242221 is about 493.5740631294.

Adding to 120242221 its reverse (122242021), we get a palindrome (242484242).

The spelling of 120242221 in words is "one hundred twenty million, two hundred forty-two thousand, two hundred twenty-one".