12213333012 has 24 divisors (see below), whose sum is σ = 28543832800. Its totient is φ = 4064531616.

The previous prime is 12213332969. The next prime is 12213333037. The reversal of 12213333012 is 21033331221.

It is a self number, because there is not a number n which added to its sum of digits gives 12213333012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814687 + ... + 829542.

Almost surely, 2^12213333012 is an apocalyptic number.

12213333012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12213333012 is an abundant number, since it is smaller than the sum of its proper divisors (16330499788).

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

12213333012 is a wasteful number, since it uses less digits than its factorization.

12213333012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644855 (or 1644853 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12213333012 its reverse (21033331221), we get a palindrome (33246664233).

The spelling of 12213333012 in words is "twelve billion, two hundred thirteen million, three hundred thirty-three thousand, twelve".