21100110001 has 8 divisors (see below), whose sum is σ = 22019793984. Its totient is φ = 20180616720.

The previous prime is 21100109959. The next prime is 21100110013. The reversal of 21100110001 is 10001100112.

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 21100110001 - 2⁹ = 21100109489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100110091) 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, 207570 + ... + 292036.

It is an arithmetic number, because the mean of its divisors is an integer number (2752474248).

Almost surely, 2^21100110001 is an apocalyptic number.

It is an amenable number.

21100110001 is a deficient number, since it is larger than the sum of its proper divisors (919683983).

21100110001 is a wasteful number, since it uses less digits than its factorization.

21100110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95351.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 21100110001 its reverse (10001100112), we get a palindrome (31101210113).

The spelling of 21100110001 in words is "twenty-one billion, one hundred million, one hundred ten thousand, one".