21103342130 has 32 divisors (see below), whose sum is σ = 41014923264. Its totient is φ = 7771640256.

The previous prime is 21103342109. The next prime is 21103342159. The reversal of 21103342130 is 3124330112.

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 15 ways as a sum of consecutive naturals, for example, 162134 + ... + 261713.

It is an arithmetic number, because the mean of its divisors is an integer number (1281716352).

Almost surely, 2^21103342130 is an apocalyptic number.

21103342130 is a deficient number, since it is larger than the sum of its proper divisors (19911581134).

21103342130 is a wasteful number, since it uses less digits than its factorization.

21103342130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424250.

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

Adding to 21103342130 its reverse (3124330112), we get a palindrome (24227672242).

The spelling of 21103342130 in words is "twenty-one billion, one hundred three million, three hundred forty-two thousand, one hundred thirty".