21303110402 has 16 divisors (see below), whose sum is σ = 36528553152. Its totient is φ = 9127670640.

The previous prime is 21303110383. The next prime is 21303110447. The reversal of 21303110402 is 20401130312.

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, 126224 + ... + 241947.

It is an arithmetic number, because the mean of its divisors is an integer number (2283034572).

Almost surely, 2^21303110402 is an apocalyptic number.

21303110402 is a deficient number, since it is larger than the sum of its proper divisors (15225442750).

21303110402 is a wasteful number, since it uses less digits than its factorization.

21303110402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372313.

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

Adding to 21303110402 its reverse (20401130312), we get a palindrome (41704240714).

The spelling of 21303110402 in words is "twenty-one billion, three hundred three million, one hundred ten thousand, four hundred two".