21130343102 has 32 divisors (see below), whose sum is σ = 35493147648. Its totient is φ = 9351160000.

The previous prime is 21130343089. The next prime is 21130343111. The reversal of 21130343102 is 20134303112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419027 + ... + 466737.

It is an arithmetic number, because the mean of its divisors is an integer number (1109160864).

Almost surely, 2^21130343102 is an apocalyptic number.

21130343102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21130343102 is a deficient number, since it is larger than the sum of its proper divisors (14362804546).

21130343102 is a wasteful number, since it uses less digits than its factorization.

21130343102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48256.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21130343102 its reverse (20134303112), we get a palindrome (41264646214).

The spelling of 21130343102 in words is "twenty-one billion, one hundred thirty million, three hundred forty-three thousand, one hundred two".