12211212132200 has 24 divisors (see below), whose sum is σ = 28391068207830. Its totient is φ = 4884484852800.

The previous prime is 12211212132193. The next prime is 12211212132233. The reversal of 12211212132200 is 223121211221.

It can be written as a sum of positive squares in 3 ways, for example, as 5555854411396 + 6655357720804 = 2357086^2 + 2579798^2 .

It is a super-2 number, since 2×12211212132200² (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 5 ways as a sum of consecutive naturals, for example, 30528030131 + ... + 30528030530.

Almost surely, 2^{12211212132200} is an apocalyptic number.

12211212132200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211212132200 is an abundant number, since it is smaller than the sum of its proper divisors (16179856075630).

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

12211212132200 is a wasteful number, since it uses less digits than its factorization.

12211212132200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61056060677 (or 61056060668 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12211212132200 its reverse (223121211221), we get a palindrome (12434333343421).

The spelling of 12211212132200 in words is "twelve trillion, two hundred eleven billion, two hundred twelve million, one hundred thirty-two thousand, two hundred".