21200312132303 has 2 divisors, whose sum is σ = 21200312132304. Its totient is φ = 21200312132302.

The previous prime is 21200312132299. The next prime is 21200312132393. The reversal of 21200312132303 is 30323121300212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21200312132303 - 2² = 21200312132299 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21200312132393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600156066151 + 10600156066152.

It is an arithmetic number, because the mean of its divisors is an integer number (10600156066152).

Almost surely, 2^{21200312132303} is an apocalyptic number.

21200312132303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200312132303 is an equidigital number, since it uses as much as digits as its factorization.

21200312132303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21200312132303 its reverse (30323121300212), we get a palindrome (51523433432515).

The spelling of 21200312132303 in words is "twenty-one trillion, two hundred billion, three hundred twelve million, one hundred thirty-two thousand, three hundred three".