21301020233231 has 2 divisors, whose sum is σ = 21301020233232. Its totient is φ = 21301020233230.

The previous prime is 21301020233149. The next prime is 21301020233267. The reversal of 21301020233231 is 13233202010312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21301020233231 is a prime.

It is a super-2 number, since 2×21301020233231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21301020233197 and 21301020233206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21301020253231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650510116615 + 10650510116616.

It is an arithmetic number, because the mean of its divisors is an integer number (10650510116616).

Almost surely, 2^{21301020233231} is an apocalyptic number.

21301020233231 is a deficient number, since it is larger than the sum of its proper divisors (1).

21301020233231 is an equidigital number, since it uses as much as digits as its factorization.

21301020233231 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21301020233231 its reverse (13233202010312), we get a palindrome (34534222243543).

The spelling of 21301020233231 in words is "twenty-one trillion, three hundred one billion, twenty million, two hundred thirty-three thousand, two hundred thirty-one".