120721219 has 2 divisors, whose sum is σ = 120721220. Its totient is φ = 120721218.

The previous prime is 120721213. The next prime is 120721241. The reversal of 120721219 is 912127021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120721219 - 2¹⁷ = 120590147 is a prime.

It is a super-2 number, since 2×120721219² = 29147225433691922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120721193 and 120721202.

It is not a weakly prime, because it can be changed into another prime (120721213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60360609 + 60360610.

It is an arithmetic number, because the mean of its divisors is an integer number (60360610).

Almost surely, 2^120721219 is an apocalyptic number.

120721219 is a deficient number, since it is larger than the sum of its proper divisors (1).

120721219 is an equidigital number, since it uses as much as digits as its factorization.

120721219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 120721219 is about 10987.3208290283. The cubic root of 120721219 is about 494.2285967971.

The spelling of 120721219 in words is "one hundred twenty million, seven hundred twenty-one thousand, two hundred nineteen".