11205236023 has 4 divisors (see below), whose sum is σ = 11205464760. Its totient is φ = 11205007288.

The previous prime is 11205236017. The next prime is 11205236041. The reversal of 11205236023 is 32063250211.

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 11205236023 - 2¹⁷ = 11205104951 is a prime.

It is a super-2 number, since 2×11205236023² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11205236083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7765 + ... + 149902.

It is an arithmetic number, because the mean of its divisors is an integer number (2801366190).

Almost surely, 2^11205236023 is an apocalyptic number.

11205236023 is a deficient number, since it is larger than the sum of its proper divisors (228737).

11205236023 is an equidigital number, since it uses as much as digits as its factorization.

11205236023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228736.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 11205236023 its reverse (32063250211), we get a palindrome (43268486234).

The spelling of 11205236023 in words is "eleven billion, two hundred five million, two hundred thirty-six thousand, twenty-three".