21210010011003 has 32 divisors (see below), whose sum is σ = 30961756829952. Its totient is φ = 12808376380800.

The previous prime is 21210010010993. The next prime is 21210010011017. The reversal of 21210010011003 is 30011001001212.

It is not a de Polignac number, because 21210010011003 - 2¹⁸ = 21210009748859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21210010011003.

It is not an unprimeable number, because it can be changed into a prime (21210010011703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186919401 + ... + 187032837.

It is an arithmetic number, because the mean of its divisors is an integer number (967554900936).

Almost surely, 2^{21210010011003} is an apocalyptic number.

21210010011003 is a deficient number, since it is larger than the sum of its proper divisors (9751746818949).

21210010011003 is a wasteful number, since it uses less digits than its factorization.

21210010011003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133755.

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

Adding to 21210010011003 its reverse (30011001001212), we get a palindrome (51221011012215).

The spelling of 21210010011003 in words is "twenty-one trillion, two hundred ten billion, ten million, eleven thousand, three".