21243414003 has 8 divisors (see below), whose sum is σ = 32370916608. Its totient is φ = 12139093704.

The previous prime is 21243413987. The next prime is 21243414007. The reversal of 21243414003 is 30041434212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21243414003 - 2⁴ = 21243413987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21243414007) 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 7 ways as a sum of consecutive naturals, for example, 505795551 + ... + 505795592.

It is an arithmetic number, because the mean of its divisors is an integer number (4046364576).

Almost surely, 2^21243414003 is an apocalyptic number.

21243414003 is a deficient number, since it is larger than the sum of its proper divisors (11127502605).

21243414003 is a wasteful number, since it uses less digits than its factorization.

21243414003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011591153.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21243414003 its reverse (30041434212), we get a palindrome (51284848215).

The spelling of 21243414003 in words is "twenty-one billion, two hundred forty-three million, four hundred fourteen thousand, three".