2121320231030 has 256 divisors, whose sum is σ = 5271470088192. Its totient is φ = 593215488000.

The previous prime is 2121320231027. The next prime is 2121320231053. The reversal of 2121320231030 is 301320231212.

It is a junction number, because it is equal to n+sod(n) for n = 2121320230993 and 2121320231011.

It is a congruent number.

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 127 ways as a sum of consecutive naturals, for example, 111211574 + ... + 111230646.

It is an arithmetic number, because the mean of its divisors is an integer number (20591680032).

Almost surely, 2^{2121320231030} is an apocalyptic number.

2121320231030 is an abundant number, since it is smaller than the sum of its proper divisors (3150149857162).

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

2121320231030 is a wasteful number, since it uses less digits than its factorization.

2121320231030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19423.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2121320231030 its reverse (301320231212), we get a palindrome (2422640462242).

The spelling of 2121320231030 in words is "two trillion, one hundred twenty-one billion, three hundred twenty million, two hundred thirty-one thousand, thirty".