11533212236 has 24 divisors (see below), whose sum is σ = 24840765600. Its totient is φ = 4562589312.

The previous prime is 11533212221. The next prime is 11533212323. The reversal of 11533212236 is 63221233511.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11533212199 and 11533212208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15841961 + ... + 15842688.

It is an arithmetic number, because the mean of its divisors is an integer number (1035031900).

Almost surely, 2^11533212236 is an apocalyptic number.

It is an amenable number.

11533212236 is an abundant number, since it is smaller than the sum of its proper divisors (13307553364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11533212236 is a wasteful number, since it uses less digits than its factorization.

11533212236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31684673 (or 31684671 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

Adding to 11533212236 its reverse (63221233511), we get a palindrome (74754445747).

The spelling of 11533212236 in words is "eleven billion, five hundred thirty-three million, two hundred twelve thousand, two hundred thirty-six".