21001133220201 has 12 divisors (see below), whose sum is σ = 30335148462528. Its totient is φ = 14000673208344.

The previous prime is 21001133220191. The next prime is 21001133220211. The reversal of 21001133220201 is 10202233110012.

21001133220201 is a `hidden beast` number, since 2 + 100 + 11 + 332 + 20 + 201 = 666.

It is an interprime number because it is at equal distance from previous prime (21001133220191) and next prime (21001133220211).

It is not a de Polignac number, because 21001133220201 - 2³⁵ = 20966773481833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21001133220211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5218725 + ... + 8320898.

It is an arithmetic number, because the mean of its divisors is an integer number (2527929038544).

Almost surely, 2^{21001133220201} is an apocalyptic number.

It is an amenable number.

21001133220201 is a deficient number, since it is larger than the sum of its proper divisors (9334015242327).

21001133220201 is a wasteful number, since it uses less digits than its factorization.

21001133220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13711972 (or 13711969 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21001133220201 its reverse (10202233110012), we get a palindrome (31203366330213).

The spelling of 21001133220201 in words is "twenty-one trillion, one billion, one hundred thirty-three million, two hundred twenty thousand, two hundred one".