21200213003231 has 2 divisors, whose sum is σ = 21200213003232. Its totient is φ = 21200213003230.

The previous prime is 21200213003161. The next prime is 21200213003323. The reversal of 21200213003231 is 13230031200212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21200213003231 is a prime.

It is a super-2 number, since 2×21200213003231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21200213003531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600106501615 + 10600106501616.

It is an arithmetic number, because the mean of its divisors is an integer number (10600106501616).

Almost surely, 2^{21200213003231} is an apocalyptic number.

21200213003231 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200213003231 is an equidigital number, since it uses as much as digits as its factorization.

21200213003231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21200213003231 its reverse (13230031200212), we get a palindrome (34430244203443).

The spelling of 21200213003231 in words is "twenty-one trillion, two hundred billion, two hundred thirteen million, three thousand, two hundred thirty-one".