21023233303 has 2 divisors, whose sum is σ = 21023233304. Its totient is φ = 21023233302.

The previous prime is 21023233249. The next prime is 21023233313. The reversal of 21023233303 is 30333232012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21023233303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21023233313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511616651 + 10511616652.

It is an arithmetic number, because the mean of its divisors is an integer number (10511616652).

Almost surely, 2^21023233303 is an apocalyptic number.

21023233303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023233303 is an equidigital number, since it uses as much as digits as its factorization.

21023233303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 21023233303 its reverse (30333232012), we get a palindrome (51356465315).

The spelling of 21023233303 in words is "twenty-one billion, twenty-three million, two hundred thirty-three thousand, three hundred three".