21433331302231 has 2 divisors, whose sum is σ = 21433331302232. Its totient is φ = 21433331302230.

The previous prime is 21433331302217. The next prime is 21433331302259. The reversal of 21433331302231 is 13220313333412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21433331302231 is a prime.

It is a super-2 number, since 2×21433331302231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21433331302193 and 21433331302202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21433331302211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10716665651115 + 10716665651116.

It is an arithmetic number, because the mean of its divisors is an integer number (10716665651116).

Almost surely, 2^{21433331302231} is an apocalyptic number.

21433331302231 is a deficient number, since it is larger than the sum of its proper divisors (1).

21433331302231 is an equidigital number, since it uses as much as digits as its factorization.

21433331302231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 21433331302231 its reverse (13220313333412), we get a palindrome (34653644635643).

The spelling of 21433331302231 in words is "twenty-one trillion, four hundred thirty-three billion, three hundred thirty-one million, three hundred two thousand, two hundred thirty-one".