21302001299 has 4 divisors (see below), whose sum is σ = 21320477736. Its totient is φ = 21283524864.

The previous prime is 21302001293. The next prime is 21302001311. The reversal of 21302001299 is 99210020312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21302001299 - 2¹⁶ = 21301935763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21302001293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9236489 + ... + 9238794.

It is an arithmetic number, because the mean of its divisors is an integer number (5330119434).

Almost surely, 2^21302001299 is an apocalyptic number.

21302001299 is a deficient number, since it is larger than the sum of its proper divisors (18476437).

21302001299 is a wasteful number, since it uses less digits than its factorization.

21302001299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18476436.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 21302001299 in words is "twenty-one billion, three hundred two million, one thousand, two hundred ninety-nine".