21104340101 has 8 divisors (see below), whose sum is σ = 23256303840. Its totient is φ = 19027883952.

The previous prime is 21104340071. The next prime is 21104340119. The reversal of 21104340101 is 10104340112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21104340101 - 2³⁴ = 3924470917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21104340101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21104340151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18876311 + ... + 18877428.

It is an arithmetic number, because the mean of its divisors is an integer number (2907037980).

Almost surely, 2^21104340101 is an apocalyptic number.

It is an amenable number.

21104340101 is a deficient number, since it is larger than the sum of its proper divisors (2151963739).

21104340101 is a wasteful number, since it uses less digits than its factorization.

21104340101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37753795.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21104340101 its reverse (10104340112), we get a palindrome (31208680213).

The spelling of 21104340101 in words is "twenty-one billion, one hundred four million, three hundred forty thousand, one hundred one".