21421114003 has 4 divisors (see below), whose sum is σ = 21589784320. Its totient is φ = 21252443688.

The previous prime is 21421113869. The next prime is 21421114031. The reversal of 21421114003 is 30041112412.

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

It is a cyclic number.

It is not a de Polignac number, because 21421114003 - 2¹⁷ = 21420982931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21421114063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84334968 + ... + 84335221.

It is an arithmetic number, because the mean of its divisors is an integer number (5397446080).

Almost surely, 2^21421114003 is an apocalyptic number.

21421114003 is a deficient number, since it is larger than the sum of its proper divisors (168670317).

21421114003 is a wasteful number, since it uses less digits than its factorization.

21421114003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168670316.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21421114003 its reverse (30041112412), we get a palindrome (51462226415).

It can be divided in two parts, 21421 and 114003, that added together give a square (135424 = 368²).

The spelling of 21421114003 in words is "twenty-one billion, four hundred twenty-one million, one hundred fourteen thousand, three".