120221216 has 24 divisors (see below), whose sum is σ = 237108060. Its totient is φ = 60003328.

The previous prime is 120221203. The next prime is 120221221. The reversal of 120221216 is 612122021.

It can be written as a sum of positive squares in 2 ways, for example, as 97219600 + 23001616 = 9860^2 + 4796^2 .

It is a junction number, because it is equal to n+sod(n) for n = 120221194 and 120221203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16700 + ... + 22788.

Almost surely, 2^120221216 is an apocalyptic number.

120221216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

120221216 is a deficient number, since it is larger than the sum of its proper divisors (116886844).

120221216 is an equidigital number, since it uses as much as digits as its factorization.

120221216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6716 (or 6708 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 120221216 is about 10964.5435837521. The cubic root of 120221216 is about 493.5453207934.

Adding to 120221216 its reverse (612122021), we get a palindrome (732343237).

The spelling of 120221216 in words is "one hundred twenty million, two hundred twenty-one thousand, two hundred sixteen".