21305326102 has 16 divisors (see below), whose sum is σ = 32165627472. Its totient is φ = 10583538400.

The previous prime is 21305326067. The next prime is 21305326103. The reversal of 21305326102 is 20162350312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21305326103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480828 + ... + 523264.

It is an arithmetic number, because the mean of its divisors is an integer number (2010351717).

Almost surely, 2^21305326102 is an apocalyptic number.

21305326102 is a deficient number, since it is larger than the sum of its proper divisors (10860301370).

21305326102 is a wasteful number, since it uses less digits than its factorization.

21305326102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44063.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 21305326102 its reverse (20162350312), we get a palindrome (41467676414).

The spelling of 21305326102 in words is "twenty-one billion, three hundred five million, three hundred twenty-six thousand, one hundred two".