12311301212 has 48 divisors (see below), whose sum is σ = 25498368000. Its totient is φ = 5088990144.

The previous prime is 12311301193. The next prime is 12311301221. The reversal of 12311301212 is 21210311321.

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, 819989 + ... + 834867.

It is an arithmetic number, because the mean of its divisors is an integer number (531216000).

Almost surely, 2^12311301212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12311301212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12749184000).

12311301212 is an abundant number, since it is smaller than the sum of its proper divisors (13187066788).

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

12311301212 is a wasteful number, since it uses less digits than its factorization.

12311301212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15938 (or 15936 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12311301212 its reverse (21210311321), we get a palindrome (33521612533).

The spelling of 12311301212 in words is "twelve billion, three hundred eleven million, three hundred one thousand, two hundred twelve".