212144331424403 has 4 divisors (see below), whose sum is σ = 242450664485040. Its totient is φ = 181837998363768.

The previous prime is 212144331424379. The next prime is 212144331424409. The reversal of 212144331424403 is 304424133441212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212144331424403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212144331424409) 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 3 ways as a sum of consecutive naturals, for example, 15153166530308 + ... + 15153166530321.

It is an arithmetic number, because the mean of its divisors is an integer number (60612666121260).

Almost surely, 2^{212144331424403} is an apocalyptic number.

212144331424403 is a deficient number, since it is larger than the sum of its proper divisors (30306333060637).

212144331424403 is an equidigital number, since it uses as much as digits as its factorization.

212144331424403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30306333060636.

The product of its (nonzero) digits is 221184, while the sum is 38.

Adding to 212144331424403 its reverse (304424133441212), we get a palindrome (516568464865615).

The spelling of 212144331424403 in words is "two hundred twelve trillion, one hundred forty-four billion, three hundred thirty-one million, four hundred twenty-four thousand, four hundred three".