21100001201 has 8 divisors (see below), whose sum is σ = 22586978400. Its totient is φ = 19650669120.

The previous prime is 21100001191. The next prime is 21100001207. The reversal of 21100001201 is 10210000112.

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 21100001201 - 2¹⁴ = 21099984817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100001207) 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, 9410120 + ... + 9412361.

It is an arithmetic number, because the mean of its divisors is an integer number (2823372300).

Almost surely, 2^21100001201 is an apocalyptic number.

It is an amenable number.

21100001201 is a deficient number, since it is larger than the sum of its proper divisors (1486977199).

21100001201 is a wasteful number, since it uses less digits than its factorization.

21100001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18822559.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 21100001201 its reverse (10210000112), we get a palindrome (31310001313).

The spelling of 21100001201 in words is "twenty-one billion, one hundred million, one thousand, two hundred one".