21103231330 has 32 divisors (see below), whose sum is σ = 38088273600. Its totient is φ = 8418560832.

The previous prime is 21103231297. The next prime is 21103231337. The reversal of 21103231330 is 3313230112.

It is a junction number, because it is equal to n+sod(n) for n = 21103231298 and 21103231307.

It is not an unprimeable number, because it can be changed into a prime (21103231337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7484661 + ... + 7487479.

It is an arithmetic number, because the mean of its divisors is an integer number (1190258550).

Almost surely, 2^21103231330 is an apocalyptic number.

21103231330 is a deficient number, since it is larger than the sum of its proper divisors (16985042270).

21103231330 is a wasteful number, since it uses less digits than its factorization.

21103231330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4578.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21103231330 its reverse (3313230112), we get a palindrome (24416461442).

The spelling of 21103231330 in words is "twenty-one billion, one hundred three million, two hundred thirty-one thousand, three hundred thirty".