21213000203003 has 8 divisors (see below), whose sum is σ = 24403981313280. Its totient is φ = 18062157220200.

The previous prime is 21213000202987. The next prime is 21213000203011. The reversal of 21213000203003 is 30030200031212.

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

It is a cyclic number.

It is not a de Polignac number, because 21213000203003 - 2⁴ = 21213000202987 is a prime.

It is a super-2 number, since 2×21213000203003² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21213000203023) 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, 10034530733 + ... + 10034532846.

It is an arithmetic number, because the mean of its divisors is an integer number (3050497664160).

Almost surely, 2^{21213000203003} is an apocalyptic number.

21213000203003 is a deficient number, since it is larger than the sum of its proper divisors (3190981110277).

21213000203003 is a wasteful number, since it uses less digits than its factorization.

21213000203003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20069063737.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21213000203003 its reverse (30030200031212), we get a palindrome (51243200234215).

The spelling of 21213000203003 in words is "twenty-one trillion, two hundred thirteen billion, two hundred three thousand, three".