21201011200201 has 4 divisors (see below), whose sum is σ = 24229727085952. Its totient is φ = 18172295314452.

The previous prime is 21201011200189. The next prime is 21201011200207. The reversal of 21201011200201 is 10200211010212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21201011200201 - 2¹⁷ = 21201011069129 is a prime.

It is a super-2 number, since 2×21201011200201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21201011200207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1514357942865 + ... + 1514357942878.

It is an arithmetic number, because the mean of its divisors is an integer number (6057431771488).

Almost surely, 2^{21201011200201} is an apocalyptic number.

It is an amenable number.

21201011200201 is a deficient number, since it is larger than the sum of its proper divisors (3028715885751).

21201011200201 is an equidigital number, since it uses as much as digits as its factorization.

21201011200201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028715885750.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21201011200201 its reverse (10200211010212), we get a palindrome (31401222210413).

The spelling of 21201011200201 in words is "twenty-one trillion, two hundred one billion, eleven million, two hundred thousand, two hundred one".