11233212111 has 160 divisors (see below), whose sum is σ = 20473896960. Its totient is φ = 6056985600.

The previous prime is 11233212101. The next prime is 11233212149. The reversal of 11233212111 is 11121233211.

It is not a de Polignac number, because 11233212111 - 2⁹ = 11233211599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11233212101) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 22068925 + ... + 22069433.

It is an arithmetic number, because the mean of its divisors is an integer number (127961856).

Almost surely, 2^11233212111 is an apocalyptic number.

11233212111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11233212111 is a deficient number, since it is larger than the sum of its proper divisors (9240684849).

11233212111 is a wasteful number, since it uses less digits than its factorization.

11233212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 618 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 11233212111 its reverse (11121233211), we get a palindrome (22354445322).

The spelling of 11233212111 in words is "eleven billion, two hundred thirty-three million, two hundred twelve thousand, one hundred eleven".