21031322102130 has 32 divisors (see below), whose sum is σ = 52103404435968. Its totient is φ = 5427437961600.

The previous prime is 21031322102071. The next prime is 21031322102149. The reversal of 21031322102130 is 3120122313012.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21031322102097 and 21031322102106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11307161491 + ... + 11307163350.

It is an arithmetic number, because the mean of its divisors is an integer number (1628231388624).

Almost surely, 2^{21031322102130} is an apocalyptic number.

21031322102130 is an abundant number, since it is smaller than the sum of its proper divisors (31072082333838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21031322102130 is a wasteful number, since it uses less digits than its factorization.

21031322102130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22614324882.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21031322102130 its reverse (3120122313012), we get a palindrome (24151444415142).

The spelling of 21031322102130 in words is "twenty-one trillion, thirty-one billion, three hundred twenty-two million, one hundred two thousand, one hundred thirty".