21487062299 has 2 divisors, whose sum is σ = 21487062300. Its totient is φ = 21487062298.

The previous prime is 21487062293. The next prime is 21487062301. The reversal of 21487062299 is 99226078412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21487062299 - 2⁴ = 21487062283 is a prime.

It is a super-3 number, since 3×21487062299³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 21487062301, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21487062293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10743531149 + 10743531150.

It is an arithmetic number, because the mean of its divisors is an integer number (10743531150).

Almost surely, 2^21487062299 is an apocalyptic number.

21487062299 is a deficient number, since it is larger than the sum of its proper divisors (1).

21487062299 is an equidigital number, since it uses as much as digits as its factorization.

21487062299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 21487062299 in words is "twenty-one billion, four hundred eighty-seven million, sixty-two thousand, two hundred ninety-nine".