12211232331320 has 128 divisors (see below), whose sum is σ = 32003554429440. Its totient is φ = 4148608611840.

The previous prime is 12211232331299. The next prime is 12211232331323. The reversal of 12211232331320 is 2313323211221.

It is a super-2 number, since 2×12211232331320² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12211232331320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211232331323) 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, 13595579 + ... + 14465898.

It is an arithmetic number, because the mean of its divisors is an integer number (250027768980).

Almost surely, 2^{12211232331320} is an apocalyptic number.

12211232331320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211232331320 is an abundant number, since it is smaller than the sum of its proper divisors (19792322098120).

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

12211232331320 is a wasteful number, since it uses less digits than its factorization.

12211232331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28061565 (or 28061561 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 12211232331320 its reverse (2313323211221), we get a palindrome (14524555542541).

The spelling of 12211232331320 in words is "twelve trillion, two hundred eleven billion, two hundred thirty-two million, three hundred thirty-one thousand, three hundred twenty".