21102003134 has 8 divisors (see below), whose sum is σ = 33514946208. Its totient is φ = 9930354400.

The previous prime is 21102003101. The next prime is 21102003161. The reversal of 21102003134 is 43130020112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 3 ways as a sum of consecutive naturals, for example, 310323542 + ... + 310323609.

It is an arithmetic number, because the mean of its divisors is an integer number (4189368276).

Almost surely, 2^21102003134 is an apocalyptic number.

21102003134 is a deficient number, since it is larger than the sum of its proper divisors (12412943074).

21102003134 is a wasteful number, since it uses less digits than its factorization.

21102003134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620647170.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21102003134 its reverse (43130020112), we get a palindrome (64232023246).

The spelling of 21102003134 in words is "twenty-one billion, one hundred two million, three thousand, one hundred thirty-four".