21412144303 has 4 divisors (see below), whose sum is σ = 23358702888. Its totient is φ = 19465585720.

The previous prime is 21412144291. The next prime is 21412144309. The reversal of 21412144303 is 30344121412.

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-21412144303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21412144309) 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, 973279276 + ... + 973279297.

It is an arithmetic number, because the mean of its divisors is an integer number (5839675722).

Almost surely, 2^21412144303 is an apocalyptic number.

21412144303 is a deficient number, since it is larger than the sum of its proper divisors (1946558585).

21412144303 is a wasteful number, since it uses less digits than its factorization.

21412144303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946558584.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21412144303 its reverse (30344121412), we get a palindrome (51756265715).

The spelling of 21412144303 in words is "twenty-one billion, four hundred twelve million, one hundred forty-four thousand, three hundred three".