120215220 has 48 divisors (see below), whose sum is σ = 345706368. Its totient is φ = 31190400.

The previous prime is 120215213. The next prime is 120215243. The reversal of 120215220 is 22512021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 120215220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24856 + ... + 29295.

It is an arithmetic number, because the mean of its divisors is an integer number (7202216).

Almost surely, 2^120215220 is an apocalyptic number.

120215220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120215220 is an abundant number, since it is smaller than the sum of its proper divisors (225491148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120215220 is a wasteful number, since it uses less digits than its factorization.

120215220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54200 (or 54198 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 120215220 is about 10964.2701535488. The cubic root of 120215220 is about 493.5371155114.

Adding to 120215220 its reverse (22512021), we get a palindrome (142727241).

The spelling of 120215220 in words is "one hundred twenty million, two hundred fifteen thousand, two hundred twenty".