21342323201 has 4 divisors (see below), whose sum is σ = 21796415232. Its totient is φ = 20888231172.

The previous prime is 21342323183. The next prime is 21342323207. The reversal of 21342323201 is 10232324312.

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-21342323201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21342323207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227045945 + ... + 227046038.

It is an arithmetic number, because the mean of its divisors is an integer number (5449103808).

Almost surely, 2^21342323201 is an apocalyptic number.

It is an amenable number.

21342323201 is a deficient number, since it is larger than the sum of its proper divisors (454092031).

21342323201 is an equidigital number, since it uses as much as digits as its factorization.

21342323201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454092030.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21342323201 its reverse (10232324312), we get a palindrome (31574647513).

The spelling of 21342323201 in words is "twenty-one billion, three hundred forty-two million, three hundred twenty-three thousand, two hundred one".