12120002220 has 48 divisors (see below), whose sum is σ = 33941684448. Its totient is φ = 3231459840.

The previous prime is 12120002201. The next prime is 12120002233. The reversal of 12120002220 is 2220002121.

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 = 12120002196 and 12120002205.

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, 452400 + ... + 478440.

It is an arithmetic number, because the mean of its divisors is an integer number (707118426).

Almost surely, 2^12120002220 is an apocalyptic number.

12120002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120002220 is an abundant number, since it is smaller than the sum of its proper divisors (21821682228).

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

12120002220 is a wasteful number, since it uses less digits than its factorization.

12120002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33810 (or 33808 counting only the distinct ones).

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

Adding to 12120002220 its reverse (2220002121), we get a palindrome (14340004341).

Subtracting from 12120002220 its reverse (2220002121), we obtain a palindrome (9900000099).

The spelling of 12120002220 in words is "twelve billion, one hundred twenty million, two thousand, two hundred twenty".