201021322103 has 4 divisors (see below), whose sum is σ = 229738653840. Its totient is φ = 172303990368.

The previous prime is 201021322057. The next prime is 201021322189. The reversal of 201021322103 is 301223120102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201021322103 - 2²² = 201017127799 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 (201021322303) 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, 14358665858 + ... + 14358665871.

It is an arithmetic number, because the mean of its divisors is an integer number (57434663460).

Almost surely, 2^201021322103 is an apocalyptic number.

201021322103 is a deficient number, since it is larger than the sum of its proper divisors (28717331737).

201021322103 is an equidigital number, since it uses as much as digits as its factorization.

201021322103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28717331736.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 201021322103 its reverse (301223120102), we get a palindrome (502244442205).

The spelling of 201021322103 in words is "two hundred one billion, twenty-one million, three hundred twenty-two thousand, one hundred three".