12212240412 has 24 divisors (see below), whose sum is σ = 28747400976. Its totient is φ = 4034722048.

The previous prime is 12212240399. The next prime is 12212240429. The reversal of 12212240412 is 21404221221.

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, 4501683 + ... + 4504394.

It is an arithmetic number, because the mean of its divisors is an integer number (1197808374).

Almost surely, 2^12212240412 is an apocalyptic number.

12212240412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12212240412 is an abundant number, since it is smaller than the sum of its proper divisors (16535160564).

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

12212240412 is a wasteful number, since it uses less digits than its factorization.

12212240412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9006197 (or 9006195 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12212240412 its reverse (21404221221), we get a palindrome (33616461633).

The spelling of 12212240412 in words is "twelve billion, two hundred twelve million, two hundred forty thousand, four hundred twelve".