21323211200201 has 4 divisors (see below), whose sum is σ = 21454028446992. Its totient is φ = 21192393953412.

The previous prime is 21323211200191. The next prime is 21323211200261. The reversal of 21323211200201 is 10200211232312.

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 a de Polignac number, because none of the positive numbers 2^k-21323211200201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21323211200261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65408623151 + ... + 65408623476.

It is an arithmetic number, because the mean of its divisors is an integer number (5363507111748).

Almost surely, 2^{21323211200201} is an apocalyptic number.

It is an amenable number.

21323211200201 is a deficient number, since it is larger than the sum of its proper divisors (130817246791).

21323211200201 is a wasteful number, since it uses less digits than its factorization.

21323211200201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130817246790.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21323211200201 its reverse (10200211232312), we get a palindrome (31523422432513).

The spelling of 21323211200201 in words is "twenty-one trillion, three hundred twenty-three billion, two hundred eleven million, two hundred thousand, two hundred one".