12211302532 has 36 divisors (see below), whose sum is σ = 25243713936. Its totient is φ = 5123620320.

The previous prime is 12211302517. The next prime is 12211302539. The reversal of 12211302532 is 23520311221.

12211302532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12211302532³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (12211302539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 813658 + ... + 828529.

It is an arithmetic number, because the mean of its divisors is an integer number (701214276).

Almost surely, 2^12211302532 is an apocalyptic number.

It is an amenable number.

12211302532 is an abundant number, since it is smaller than the sum of its proper divisors (13032411404).

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

12211302532 is a wasteful number, since it uses less digits than its factorization.

12211302532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642228 (or 1642213 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 12211302532 its reverse (23520311221), we get a palindrome (35731613753).

The spelling of 12211302532 in words is "twelve billion, two hundred eleven million, three hundred two thousand, five hundred thirty-two".