11231103212 has 54 divisors (see below), whose sum is σ = 23625030996. Its totient is φ = 4657983120.

The previous prime is 11231103203. The next prime is 11231103239. The reversal of 11231103212 is 21230113211.

11231103212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11231103212² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 158543 + ... + 218169.

It is an arithmetic number, because the mean of its divisors is an integer number (437500574).

Almost surely, 2^11231103212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11231103212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11812515498).

11231103212 is an abundant number, since it is smaller than the sum of its proper divisors (12393927784).

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

11231103212 is a wasteful number, since it uses less digits than its factorization.

11231103212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59707 (or 59667 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11231103212 its reverse (21230113211), we get a palindrome (32461216423).

Subtracting 11231103212 from its reverse (21230113211), we obtain a palindrome (9999009999).

The spelling of 11231103212 in words is "eleven billion, two hundred thirty-one million, one hundred three thousand, two hundred twelve".