201321311101 has 16 divisors (see below), whose sum is σ = 213288644800. Its totient is φ = 189495116928.

The previous prime is 201321311047. The next prime is 201321311153. The reversal of 201321311101 is 101113123102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201321311101 - 2²³ = 201312922493 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 (201321311701) 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, 1770595 + ... + 1880863.

It is an arithmetic number, because the mean of its divisors is an integer number (13330540300).

Almost surely, 2^201321311101 is an apocalyptic number.

It is an amenable number.

201321311101 is a deficient number, since it is larger than the sum of its proper divisors (11967333699).

201321311101 is a wasteful number, since it uses less digits than its factorization.

201321311101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110908.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 201321311101 its reverse (101113123102), we get a palindrome (302434434203).

The spelling of 201321311101 in words is "two hundred one billion, three hundred twenty-one million, three hundred eleven thousand, one hundred one".