12101188220 has 36 divisors (see below), whose sum is σ = 27932748312. Its totient is φ = 4400431200.

The previous prime is 12101188213. The next prime is 12101188243. The reversal of 12101188220 is 2288110121.

It is a self number, because there is not a number n which added to its sum of digits gives 12101188220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2497826 + ... + 2502665.

Almost surely, 2^12101188220 is an apocalyptic number.

12101188220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101188220 is an abundant number, since it is smaller than the sum of its proper divisors (15831560092).

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

12101188220 is a wasteful number, since it uses less digits than its factorization.

12101188220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000522 (or 5000509 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 26.

Adding to 12101188220 its reverse (2288110121), we get a palindrome (14389298341).

The spelling of 12101188220 in words is "twelve billion, one hundred one million, one hundred eighty-eight thousand, two hundred twenty".