21002022011287 has 2 divisors, whose sum is σ = 21002022011288. Its totient is φ = 21002022011286.

The previous prime is 21002022011209. The next prime is 21002022011291. The reversal of 21002022011287 is 78211022020012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21002022011287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21002022011207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501011005643 + 10501011005644.

It is an arithmetic number, because the mean of its divisors is an integer number (10501011005644).

Almost surely, 2^{21002022011287} is an apocalyptic number.

21002022011287 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002022011287 is an equidigital number, since it uses as much as digits as its factorization.

21002022011287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 28.

Adding to 21002022011287 its reverse (78211022020012), we get a palindrome (99213044031299).

The spelling of 21002022011287 in words is "twenty-one trillion, two billion, twenty-two million, eleven thousand, two hundred eighty-seven".