12102244420 has 72 divisors (see below), whose sum is σ = 30849505344. Its totient is φ = 3968927424.

The previous prime is 12102244403. The next prime is 12102244447. The reversal of 12102244420 is 2444220121.

It is a super-2 number, since 2×12102244420² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12102244391 and 12102244400.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245922 + ... + 291001.

It is an arithmetic number, because the mean of its divisors is an integer number (428465352).

Almost surely, 2^12102244420 is an apocalyptic number.

12102244420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102244420 is an abundant number, since it is smaller than the sum of its proper divisors (18747260924).

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

12102244420 is a wasteful number, since it uses less digits than its factorization.

12102244420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536969 (or 536960 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 12102244420 its reverse (2444220121), we get a palindrome (14546464541).

The spelling of 12102244420 in words is "twelve billion, one hundred two million, two hundred forty-four thousand, four hundred twenty".