21110402330 has 16 divisors (see below), whose sum is σ = 38098991520. Its totient is φ = 8421879312.

The previous prime is 21110402329. The next prime is 21110402353. The reversal of 21110402330 is 3320401112.

It is a junction number, because it is equal to n+sod(n) for n = 21110402299 and 21110402308.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2781224 + ... + 2788803.

It is an arithmetic number, because the mean of its divisors is an integer number (2381186970).

Almost surely, 2^21110402330 is an apocalyptic number.

21110402330 is a deficient number, since it is larger than the sum of its proper divisors (16988589190).

21110402330 is a wasteful number, since it uses less digits than its factorization.

21110402330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5570413.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21110402330 its reverse (3320401112), we get a palindrome (24430803442).

The spelling of 21110402330 in words is "twenty-one billion, one hundred ten million, four hundred two thousand, three hundred thirty".