11231203112 has 16 divisors (see below), whose sum is σ = 21325070400. Its totient is φ = 5544517680.

The previous prime is 11231203111. The next prime is 11231203133. The reversal of 11231203112 is 21130213211.

It is a super-2 number, since 2×11231203112² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11231203111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8884814 + ... + 8886077.

It is an arithmetic number, because the mean of its divisors is an integer number (1332816900).

Almost surely, 2^11231203112 is an apocalyptic number.

It is an amenable number.

11231203112 is a deficient number, since it is larger than the sum of its proper divisors (10093867288).

11231203112 is a wasteful number, since it uses less digits than its factorization.

11231203112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17770976 (or 17770972 counting only the distinct ones).

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

Adding to 11231203112 its reverse (21130213211), we get a palindrome (32361416323).

The spelling of 11231203112 in words is "eleven billion, two hundred thirty-one million, two hundred three thousand, one hundred twelve".