21321130320322 has 12 divisors (see below), whose sum is σ = 37203196783590. Its totient is φ = 9137627280096.

The previous prime is 21321130320311. The next prime is 21321130320331. The reversal of 21321130320322 is 22302303112312.

It can be written as a sum of positive squares in only one way, i.e., 20540573973241 + 780556347081 = 4532171^2 + 883491^2 .

It is a super-2 number, since 2×21321130320322² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108781277047 + ... + 108781277242.

Almost surely, 2^{21321130320322} is an apocalyptic number.

21321130320322 is a deficient number, since it is larger than the sum of its proper divisors (15882066463268).

21321130320322 is a wasteful number, since it uses less digits than its factorization.

21321130320322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217562554305 (or 217562554298 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21321130320322 its reverse (22302303112312), we get a palindrome (43623433432634).

The spelling of 21321130320322 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred thirty million, three hundred twenty thousand, three hundred twenty-two".