21033014287 has 2 divisors, whose sum is σ = 21033014288. Its totient is φ = 21033014286.

The previous prime is 21033014279. The next prime is 21033014341. The reversal of 21033014287 is 78241033012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21033014287 - 2³ = 21033014279 is a prime.

It is a super-2 number, since 2×21033014287² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21033014257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516507143 + 10516507144.

It is an arithmetic number, because the mean of its divisors is an integer number (10516507144).

Almost surely, 2^21033014287 is an apocalyptic number.

21033014287 is a deficient number, since it is larger than the sum of its proper divisors (1).

21033014287 is an equidigital number, since it uses as much as digits as its factorization.

21033014287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 21033014287 its reverse (78241033012), we get a palindrome (99274047299).

The spelling of 21033014287 in words is "twenty-one billion, thirty-three million, fourteen thousand, two hundred eighty-seven".