21334580207 has 4 divisors (see below), whose sum is σ = 21336474720. Its totient is φ = 21332685696.

The previous prime is 21334580023. The next prime is 21334580227. The reversal of 21334580207 is 70208543312.

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 21334580207 - 2²⁰ = 21333531631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334580227) 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, 930263 + ... + 952920.

It is an arithmetic number, because the mean of its divisors is an integer number (5334118680).

Almost surely, 2^21334580207 is an apocalyptic number.

21334580207 is a deficient number, since it is larger than the sum of its proper divisors (1894513).

21334580207 is a wasteful number, since it uses less digits than its factorization.

21334580207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894512.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 21334580207 in words is "twenty-one billion, three hundred thirty-four million, five hundred eighty thousand, two hundred seven".