21201120002201 has 8 divisors (see below), whose sum is σ = 21601394910720. Its totient is φ = 20800854492912.

The previous prime is 21201120002147. The next prime is 21201120002203. The reversal of 21201120002201 is 10220002110212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21201120002201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21201120002203) 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, 2289686 + ... + 6902528.

It is an arithmetic number, because the mean of its divisors is an integer number (2700174363840).

Almost surely, 2^{21201120002201} is an apocalyptic number.

It is an amenable number.

21201120002201 is a deficient number, since it is larger than the sum of its proper divisors (400274908519).

21201120002201 is an equidigital number, since it uses as much as digits as its factorization.

21201120002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4699615.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21201120002201 its reverse (10220002110212), we get a palindrome (31421122112413).

The spelling of 21201120002201 in words is "twenty-one trillion, two hundred one billion, one hundred twenty million, two thousand, two hundred one".