21000002011203 has 4 divisors (see below), whose sum is σ = 28000002681608. Its totient is φ = 14000001340800.

The previous prime is 21000002011199. The next prime is 21000002011207. The reversal of 21000002011203 is 30211020000012.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21000002011199) and next prime (21000002011207).

It is not a de Polignac number, because 21000002011203 - 2² = 21000002011199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000002011207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3500000335198 + ... + 3500000335203.

It is an arithmetic number, because the mean of its divisors is an integer number (7000000670402).

Almost surely, 2^{21000002011203} is an apocalyptic number.

21000002011203 is a deficient number, since it is larger than the sum of its proper divisors (7000000670405).

21000002011203 is an equidigital number, since it uses as much as digits as its factorization.

21000002011203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000000670404.

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

Adding to 21000002011203 its reverse (30211020000012), we get a palindrome (51211022011215).

The spelling of 21000002011203 in words is "twenty-one trillion, two million, eleven thousand, two hundred three".