21304111302 has 24 divisors (see below), whose sum is σ = 46173606336. Its totient is φ = 7099109136.

The previous prime is 21304111277. The next prime is 21304111313. The reversal of 21304111302 is 20311140312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129853 + ... + 243864.

It is an arithmetic number, because the mean of its divisors is an integer number (1923900264).

Almost surely, 2^21304111302 is an apocalyptic number.

21304111302 is an abundant number, since it is smaller than the sum of its proper divisors (24869495034).

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

21304111302 is a wasteful number, since it uses less digits than its factorization.

21304111302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376892 (or 376889 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21304111302 its reverse (20311140312), we get a palindrome (41615251614).

The spelling of 21304111302 in words is "twenty-one billion, three hundred four million, one hundred eleven thousand, three hundred two".