11131203012 has 24 divisors (see below), whose sum is σ = 26049887136. Its totient is φ = 3699389568.

The previous prime is 11131202993. The next prime is 11131203049. The reversal of 11131203012 is 21030213111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11131202982 and 11131203000.

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, 1372218 + ... + 1380305.

It is an arithmetic number, because the mean of its divisors is an integer number (1085411964).

Almost surely, 2^11131203012 is an apocalyptic number.

11131203012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11131203012 is an abundant number, since it is smaller than the sum of its proper divisors (14918684124).

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

11131203012 is a wasteful number, since it uses less digits than its factorization.

11131203012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752867 (or 2752865 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11131203012 its reverse (21030213111), we get a palindrome (32161416123).

The spelling of 11131203012 in words is "eleven billion, one hundred thirty-one million, two hundred three thousand, twelve".