12224512212 has 96 divisors (see below), whose sum is σ = 31461986304. Its totient is φ = 3663475200.

The previous prime is 12224512211. The next prime is 12224512231. The reversal of 12224512212 is 21221542221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12224512211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12335037 + ... + 12336027.

It is an arithmetic number, because the mean of its divisors is an integer number (327729024).

Almost surely, 2^12224512212 is an apocalyptic number.

12224512212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12224512212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15730993152).

12224512212 is an abundant number, since it is smaller than the sum of its proper divisors (19237474092).

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

12224512212 is a wasteful number, since it uses less digits than its factorization.

12224512212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949 (or 1947 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The spelling of 12224512212 in words is "twelve billion, two hundred twenty-four million, five hundred twelve thousand, two hundred twelve".