201321320223 has 16 divisors (see below), whose sum is σ = 276071023872. Its totient is φ = 130419000000.

The previous prime is 201321320209. The next prime is 201321320243. The reversal of 201321320223 is 322023123102.

It is a happy number.

It is not a de Polignac number, because 201321320223 - 2³² = 197026352927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201321320223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201321320243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3229603 + ... + 3291348.

It is an arithmetic number, because the mean of its divisors is an integer number (17254438992).

Almost surely, 2^201321320223 is an apocalyptic number.

201321320223 is a deficient number, since it is larger than the sum of its proper divisors (74749703649).

201321320223 is a wasteful number, since it uses less digits than its factorization.

201321320223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6521246.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 201321320223 its reverse (322023123102), we get a palindrome (523344443325).

The spelling of 201321320223 in words is "two hundred one billion, three hundred twenty-one million, three hundred twenty thousand, two hundred twenty-three".