201322444421 has 4 divisors (see below), whose sum is σ = 230082793632. Its totient is φ = 172562095212.

The previous prime is 201322444403. The next prime is 201322444469. The reversal of 201322444421 is 124444223102.

It is a happy number.

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-201322444421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201322444471) 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, 14380174595 + ... + 14380174608.

It is an arithmetic number, because the mean of its divisors is an integer number (57520698408).

Almost surely, 2^201322444421 is an apocalyptic number.

It is an amenable number.

201322444421 is a deficient number, since it is larger than the sum of its proper divisors (28760349211).

201322444421 is an equidigital number, since it uses as much as digits as its factorization.

201322444421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28760349210.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 201322444421 its reverse (124444223102), we get a palindrome (325766667523).

The spelling of 201322444421 in words is "two hundred one billion, three hundred twenty-two million, four hundred forty-four thousand, four hundred twenty-one".