21320322302 has 16 divisors (see below), whose sum is σ = 34031858400. Its totient is φ = 9982672128.

The previous prime is 21320322277. The next prime is 21320322311. The reversal of 21320322302 is 20322302312.

It is a super-2 number, since 2×21320322302² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1568783 + ... + 1582314.

It is an arithmetic number, because the mean of its divisors is an integer number (2126991150).

Almost surely, 2^21320322302 is an apocalyptic number.

21320322302 is a deficient number, since it is larger than the sum of its proper divisors (12711536098).

21320322302 is a wasteful number, since it uses less digits than its factorization.

21320322302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151315.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21320322302 its reverse (20322302312), we get a palindrome (41642624614).

The spelling of 21320322302 in words is "twenty-one billion, three hundred twenty million, three hundred twenty-two thousand, three hundred two".