11201231223 has 96 divisors (see below), whose sum is σ = 20714803200. Its totient is φ = 5674675968.

The previous prime is 11201231221. The next prime is 11201231233. The reversal of 11201231223 is 32213210211.

11201231223 is a `hidden beast` number, since 11 + 201 + 231 + 223 = 666.

It is not a de Polignac number, because 11201231223 - 2¹ = 11201231221 is a prime.

It is a super-2 number, since 2×11201231223² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11201231196 and 11201231205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201231221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2391598 + ... + 2396276.

It is an arithmetic number, because the mean of its divisors is an integer number (215779200).

Almost surely, 2^11201231223 is an apocalyptic number.

11201231223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11201231223 is a deficient number, since it is larger than the sum of its proper divisors (9513571977).

11201231223 is a wasteful number, since it uses less digits than its factorization.

11201231223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4821 (or 4818 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11201231223 its reverse (32213210211), we get a palindrome (43414441434).

The spelling of 11201231223 in words is "eleven billion, two hundred one million, two hundred thirty-one thousand, two hundred twenty-three".