12204221340 has 48 divisors (see below), whose sum is σ = 35095388832. Its totient is φ = 3166500096.

The previous prime is 12204221339. The next prime is 12204221363. The reversal of 12204221340 is 4312240221.

It is a super-2 number, since 2×12204221340² (a number of 21 digits) contains 22 as substring.

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, 2746479 + ... + 2750918.

It is an arithmetic number, because the mean of its divisors is an integer number (731153934).

Almost surely, 2^12204221340 is an apocalyptic number.

12204221340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12204221340 is an abundant number, since it is smaller than the sum of its proper divisors (22891167492).

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

12204221340 is a wasteful number, since it uses less digits than its factorization.

12204221340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5497446 (or 5497444 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12204221340 its reverse (4312240221), we get a palindrome (16516461561).

The spelling of 12204221340 in words is "twelve billion, two hundred four million, two hundred twenty-one thousand, three hundred forty".