120221421 has 8 divisors (see below), whose sum is σ = 164023200. Its totient is φ = 78283632.

The previous prime is 120221419. The next prime is 120221429. The reversal of 120221421 is 124122021.

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

It is not a de Polignac number, because 120221421 - 2¹ = 120221419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120221421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465846 + ... + 466103.

It is an arithmetic number, because the mean of its divisors is an integer number (20502900).

Almost surely, 2^120221421 is an apocalyptic number.

It is an amenable number.

120221421 is a deficient number, since it is larger than the sum of its proper divisors (43801779).

120221421 is an equidigital number, since it uses as much as digits as its factorization.

120221421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931995.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 120221421 is about 10964.5529320625. The cubic root of 120221421 is about 493.5456013227.

Adding to 120221421 its reverse (124122021), we get a palindrome (244343442).

The spelling of 120221421 in words is "one hundred twenty million, two hundred twenty-one thousand, four hundred twenty-one".