11201131212 has 24 divisors (see below), whose sum is σ = 26842351536. Its totient is φ = 3632799168.

The previous prime is 11201131177. The next prime is 11201131231. The reversal of 11201131212 is 21213110211.

It is a junction number, because it is equal to n+sod(n) for n = 11201131191 and 11201131200.

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, 12613443 + ... + 12614330.

It is an arithmetic number, because the mean of its divisors is an integer number (1118431314).

Almost surely, 2^11201131212 is an apocalyptic number.

11201131212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11201131212 is an abundant number, since it is smaller than the sum of its proper divisors (15641220324).

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

11201131212 is a wasteful number, since it uses less digits than its factorization.

11201131212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25227817 (or 25227815 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11201131212 its reverse (21213110211), we get a palindrome (32414241423).

The spelling of 11201131212 in words is "eleven billion, two hundred one million, one hundred thirty-one thousand, two hundred twelve".