12102011220 has 48 divisors (see below), whose sum is σ = 36492220800. Its totient is φ = 2978956416.

The previous prime is 12102011209. The next prime is 12102011237. The reversal of 12102011220 is 2211020121.

It is a super-3 number, since 3×12102011220³ (a number of 31 digits) contains 333 as substring.

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 = 12102011196 and 12102011205.

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, 7756920 + ... + 7758479.

It is an arithmetic number, because the mean of its divisors is an integer number (760254600).

Almost surely, 2^12102011220 is an apocalyptic number.

12102011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102011220 is an abundant number, since it is smaller than the sum of its proper divisors (24390209580).

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

12102011220 is a wasteful number, since it uses less digits than its factorization.

12102011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15515424 (or 15515422 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12102011220 its reverse (2211020121), we get a palindrome (14313031341).

The spelling of 12102011220 in words is "twelve billion, one hundred two million, eleven thousand, two hundred twenty".