21210200010003 has 16 divisors (see below), whose sum is σ = 29044754779040. Its totient is φ = 13757893410816.

The previous prime is 21210200009959. The next prime is 21210200010011. The reversal of 21210200010003 is 30001000201212.

It is not a de Polignac number, because 21210200010003 - 2²¹ = 21210197912851 is a prime.

It is a super-2 number, since 2×21210200010003² (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 (21210200030003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26544801 + ... + 27332157.

It is an arithmetic number, because the mean of its divisors is an integer number (1815297173690).

Almost surely, 2^{21210200010003} is an apocalyptic number.

21210200010003 is a deficient number, since it is larger than the sum of its proper divisors (7834554769037).

21210200010003 is a wasteful number, since it uses less digits than its factorization.

21210200010003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030086.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21210200010003 its reverse (30001000201212), we get a palindrome (51211200211215).

The spelling of 21210200010003 in words is "twenty-one trillion, two hundred ten billion, two hundred million, ten thousand, three".