201344210321 has 4 divisors (see below), whose sum is σ = 201345571392. Its totient is φ = 201342849252.

The previous prime is 201344210261. The next prime is 201344210329. The reversal of 201344210321 is 123012443102.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123012443102 = 2 ⋅61506221551.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201344210321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201344210329) 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, 427205 + ... + 764978.

It is an arithmetic number, because the mean of its divisors is an integer number (50336392848).

Almost surely, 2^201344210321 is an apocalyptic number.

It is an amenable number.

201344210321 is a deficient number, since it is larger than the sum of its proper divisors (1361071).

201344210321 is a wasteful number, since it uses less digits than its factorization.

201344210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361070.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 201344210321 its reverse (123012443102), we get a palindrome (324356653423).

The spelling of 201344210321 in words is "two hundred one billion, three hundred forty-four million, two hundred ten thousand, three hundred twenty-one".