11231223201 has 24 divisors (see below), whose sum is σ = 18176006784. Its totient is φ = 6622832160.

The previous prime is 11231223197. The next prime is 11231223239. The reversal of 11231223201 is 10232213211.

11231223201 is a `hidden beast` number, since 11 + 231 + 223 + 201 = 666.

It is not a de Polignac number, because 11231223201 - 2² = 11231223197 is a prime.

It is a super-2 number, since 2×11231223201² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11231223251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1529401 + ... + 1536726.

It is an arithmetic number, because the mean of its divisors is an integer number (757333616).

Almost surely, 2^11231223201 is an apocalyptic number.

11231223201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11231223201 is a deficient number, since it is larger than the sum of its proper divisors (6944783583).

11231223201 is a wasteful number, since it uses less digits than its factorization.

11231223201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066181 (or 3066178 counting only the distinct ones).

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

Adding to 11231223201 its reverse (10232213211), we get a palindrome (21463436412).

It can be divided in two parts, 11231 and 223201, that added together give a palindrome (234432).

The spelling of 11231223201 in words is "eleven billion, two hundred thirty-one million, two hundred twenty-three thousand, two hundred one".