21022103003 has 4 divisors (see below), whose sum is σ = 22933203288. Its totient is φ = 19111002720.

The previous prime is 21022102931. The next prime is 21022103021. The reversal of 21022103003 is 30030122012.

It is a happy number.

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 21022103003 - 2²⁴ = 21005325787 is a prime.

It is a super-3 number, since 3×21022103003³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022103023) 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, 955550126 + ... + 955550147.

It is an arithmetic number, because the mean of its divisors is an integer number (5733300822).

Almost surely, 2^21022103003 is an apocalyptic number.

21022103003 is a deficient number, since it is larger than the sum of its proper divisors (1911100285).

21022103003 is a wasteful number, since it uses less digits than its factorization.

21022103003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911100284.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21022103003 its reverse (30030122012), we get a palindrome (51052225015).

The spelling of 21022103003 in words is "twenty-one billion, twenty-two million, one hundred three thousand, three".