13111012 has 48 divisors (see below), whose sum is σ = 25909632. Its totient is φ = 5772800.

The previous prime is 13111009. The next prime is 13111013. The reversal of 13111012 is 21011131.

It is a self number, because there is not a number n which added to its sum of digits gives 13111012.

It is not an unprimeable number, because it can be changed into a prime (13111013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129762 + ... + 129862.

It is an arithmetic number, because the mean of its divisors is an integer number (539784).

Almost surely, 2^13111012 is an apocalyptic number.

It is an amenable number.

13111012 is a deficient number, since it is larger than the sum of its proper divisors (12798620).

13111012 is a wasteful number, since it uses less digits than its factorization.

13111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 13111012 is about 3620.9131444982. The cubic root of 13111012 is about 235.8008710023.

Adding to 13111012 its reverse (21011131), we get a palindrome (34122143).

The spelling of 13111012 in words is "thirteen million, one hundred eleven thousand, twelve".