12212404443 has 24 divisors (see below), whose sum is σ = 18090552480. Its totient is φ = 7934163840.

The previous prime is 12212404441. The next prime is 12212404459. The reversal of 12212404443 is 34440421221.

12212404443 is a `hidden beast` number, since 1 + 2 + 212 + 4 + 0 + 4 + 443 = 666.

It is not a de Polignac number, because 12212404443 - 2¹ = 12212404441 is a prime.

It is a super-2 number, since 2×12212404443² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12212404441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 321105 + ... + 357117.

It is an arithmetic number, because the mean of its divisors is an integer number (753773020).

Almost surely, 2^12212404443 is an apocalyptic number.

12212404443 is a deficient number, since it is larger than the sum of its proper divisors (5878148037).

12212404443 is a wasteful number, since it uses less digits than its factorization.

12212404443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36979 (or 36976 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 12212404443 its reverse (34440421221), we get a palindrome (46652825664).

The spelling of 12212404443 in words is "twelve billion, two hundred twelve million, four hundred four thousand, four hundred forty-three".