21321033212303 has 32 divisors (see below), whose sum is σ = 24034828339200. Its totient is φ = 18737815536000.

The previous prime is 21321033212291. The next prime is 21321033212411. The reversal of 21321033212303 is 30321233012312.

It is not a de Polignac number, because 21321033212303 - 2¹⁴ = 21321033195919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321033212603) 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, 1604164088 + ... + 1604177378.

It is an arithmetic number, because the mean of its divisors is an integer number (751088385600).

Almost surely, 2^{21321033212303} is an apocalyptic number.

21321033212303 is a deficient number, since it is larger than the sum of its proper divisors (2713795126897).

21321033212303 is a wasteful number, since it uses less digits than its factorization.

21321033212303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17919.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 21321033212303 its reverse (30321233012312), we get a palindrome (51642266224615).

The spelling of 21321033212303 in words is "twenty-one trillion, three hundred twenty-one billion, thirty-three million, two hundred twelve thousand, three hundred three".