21050234003 has 8 divisors (see below), whose sum is σ = 22310374320. Its totient is φ = 19792526080.

The previous prime is 21050233957. The next prime is 21050234011. The reversal of 21050234003 is 30043205012.

It is a happy number.

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

It is not a de Polignac number, because 21050234003 - 2²⁰ = 21049185427 is a prime.

It is a super-2 number, since 2×21050234003² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21050254003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590258 + ... + 624903.

It is an arithmetic number, because the mean of its divisors is an integer number (2788796790).

Almost surely, 2^21050234003 is an apocalyptic number.

21050234003 is a deficient number, since it is larger than the sum of its proper divisors (1260140317).

21050234003 is a wasteful number, since it uses less digits than its factorization.

21050234003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216197.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 21050234003 its reverse (30043205012), we get a palindrome (51093439015).

The spelling of 21050234003 in words is "twenty-one billion, fifty million, two hundred thirty-four thousand, three".