21000103701 has 8 divisors (see below), whose sum is σ = 29217535680. Its totient is φ = 13391370432.

The previous prime is 21000103643. The next prime is 21000103721. The reversal of 21000103701 is 10730100012.

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

It is a de Polignac number, because none of the positive numbers 2^k-21000103701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000103721) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 152174596 + ... + 152174733.

It is an arithmetic number, because the mean of its divisors is an integer number (3652191960).

Almost surely, 2^21000103701 is an apocalyptic number.

It is an amenable number.

21000103701 is a deficient number, since it is larger than the sum of its proper divisors (8217431979).

21000103701 is a wasteful number, since it uses less digits than its factorization.

21000103701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304349355.

The product of its (nonzero) digits is 42, while the sum is 15.

Adding to 21000103701 its reverse (10730100012), we get a palindrome (31730203713).

The spelling of 21000103701 in words is "twenty-one billion, one hundred three thousand, seven hundred one".