21302102102 has 32 divisors (see below), whose sum is σ = 32875783200. Its totient is φ = 10348128000.

The previous prime is 21302102099. The next prime is 21302102117. The reversal of 21302102102 is 20120120312.

It is a happy number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 8448602 + ... + 8451122.

It is an arithmetic number, because the mean of its divisors is an integer number (1027368225).

Almost surely, 2^21302102102 is an apocalyptic number.

21302102102 is a deficient number, since it is larger than the sum of its proper divisors (11573681098).

21302102102 is a wasteful number, since it uses less digits than its factorization.

21302102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3392.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21302102102 its reverse (20120120312), we get a palindrome (41422222414).

It can be divided in two parts, 2130210 and 2102, that added together give a palindrome (2132312).

The spelling of 21302102102 in words is "twenty-one billion, three hundred two million, one hundred two thousand, one hundred two".