21100201002001 has 8 divisors (see below), whose sum is σ = 23084736547104. Its totient is φ = 19126721365920.

The previous prime is 21100201001981. The next prime is 21100201002011. The reversal of 21100201002001 is 10020010200112.

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 21100201002001 - 2¹⁷ = 21100200870929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100201002011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2763973260 + ... + 2763980893.

It is an arithmetic number, because the mean of its divisors is an integer number (2885592068388).

Almost surely, 2^{21100201002001} is an apocalyptic number.

It is an amenable number.

21100201002001 is a deficient number, since it is larger than the sum of its proper divisors (1984535545103).

21100201002001 is a wasteful number, since it uses less digits than its factorization.

21100201002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5527954511.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21100201002001 its reverse (10020010200112), we get a palindrome (31120211202113).

The spelling of 21100201002001 in words is "twenty-one trillion, one hundred billion, two hundred one million, two thousand, one".