12211212131300 has 144 divisors (see below), whose sum is σ = 32615180744832. Its totient is φ = 3864428006400.

The previous prime is 12211212131299. The next prime is 12211212131429. The reversal of 12211212131300 is 313121211221.

It is a super-2 number, since 2×12211212131300² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251800055 + ... + 251848545.

It is an arithmetic number, because the mean of its divisors is an integer number (226494310728).

Almost surely, 2^{12211212131300} is an apocalyptic number.

12211212131300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211212131300 is an abundant number, since it is smaller than the sum of its proper divisors (20403968613532).

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

12211212131300 is a wasteful number, since it uses less digits than its factorization.

12211212131300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76198 (or 76191 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12211212131300 its reverse (313121211221), we get a palindrome (12524333342521).

The spelling of 12211212131300 in words is "twelve trillion, two hundred eleven billion, two hundred twelve million, one hundred thirty-one thousand, three hundred".