120212220 has 96 divisors (see below), whose sum is σ = 345461760. Its totient is φ = 31225600.

The previous prime is 120212171. The next prime is 120212243. The reversal of 120212220 is 22212021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 120212196 and 120212205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 502861 + ... + 503099.

It is an arithmetic number, because the mean of its divisors is an integer number (3598560).

Almost surely, 2^120212220 is an apocalyptic number.

120212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120212220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172730880).

120212220 is an abundant number, since it is smaller than the sum of its proper divisors (225249540).

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

120212220 is a wasteful number, since it uses less digits than its factorization.

120212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 120212220 is about 10964.1333446835. The cubic root of 120212220 is about 493.5330100311.

Adding to 120212220 its reverse (22212021), we get a palindrome (142424241).

It can be divided in two parts, 12021 and 2220, that added together give a palindrome (14241).

The spelling of 120212220 in words is "one hundred twenty million, two hundred twelve thousand, two hundred twenty".