201101131223 has 4 divisors (see below), whose sum is σ = 201541177920. Its totient is φ = 200661084528.

The previous prime is 201101131177. The next prime is 201101131237. The reversal of 201101131223 is 322131101102.

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 201101131223 - 2²⁰ = 201100082647 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 (201101931223) 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, 220022663 + ... + 220023576.

It is an arithmetic number, because the mean of its divisors is an integer number (50385294480).

Almost surely, 2^201101131223 is an apocalyptic number.

201101131223 is a deficient number, since it is larger than the sum of its proper divisors (440046697).

201101131223 is an equidigital number, since it uses as much as digits as its factorization.

201101131223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440046696.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 201101131223 its reverse (322131101102), we get a palindrome (523232232325).

The spelling of 201101131223 in words is "two hundred one billion, one hundred one million, one hundred thirty-one thousand, two hundred twenty-three".