11311100012 has 24 divisors (see below), whose sum is σ = 19863803904. Its totient is φ = 5635752912.

The previous prime is 11311099949. The next prime is 11311100023. The reversal of 11311100012 is 21000111311.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11311099966 and 11311100002.

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, 2738693 + ... + 2742819.

It is an arithmetic number, because the mean of its divisors is an integer number (827658496).

Almost surely, 2^11311100012 is an apocalyptic number.

It is an amenable number.

11311100012 is a deficient number, since it is larger than the sum of its proper divisors (8552703892).

11311100012 is a wasteful number, since it uses less digits than its factorization.

11311100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6365 (or 6363 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 11311100012 its reverse (21000111311), we get a palindrome (32311211323).

The spelling of 11311100012 in words is "eleven billion, three hundred eleven million, one hundred thousand, twelve".