120421219 has 4 divisors (see below), whose sum is σ = 121300344. Its totient is φ = 119542096.

The previous prime is 120421211. The next prime is 120421241. The reversal of 120421219 is 912124021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 912124021 = 14771 ⋅61751.

It is a cyclic number.

It is not a de Polignac number, because 120421219 - 2³ = 120421211 is a prime.

It is a super-2 number, since 2×120421219² = 29002539970891922, which contains 22 as substring.

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 120421219.

It is not an unprimeable number, because it can be changed into a prime (120421211) 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 3 ways as a sum of consecutive naturals, for example, 439357 + ... + 439630.

It is an arithmetic number, because the mean of its divisors is an integer number (30325086).

Almost surely, 2^120421219 is an apocalyptic number.

120421219 is a deficient number, since it is larger than the sum of its proper divisors (879125).

120421219 is an equidigital number, since it uses as much as digits as its factorization.

120421219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879124.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 120421219 is about 10973.6602371315. The cubic root of 120421219 is about 493.8188605770.

The spelling of 120421219 in words is "one hundred twenty million, four hundred twenty-one thousand, two hundred nineteen".