11111020012 has 24 divisors (see below), whose sum is σ = 19536878592. Its totient is φ = 5529090000.

The previous prime is 11111020001. The next prime is 11111020033. The reversal of 11111020012 is 21002011111.

11111020012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1585837 + ... + 1592827.

It is an arithmetic number, because the mean of its divisors is an integer number (814036608).

Almost surely, 2^11111020012 is an apocalyptic number.

It is an amenable number.

11111020012 is a deficient number, since it is larger than the sum of its proper divisors (8425858580).

11111020012 is a wasteful number, since it uses less digits than its factorization.

11111020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8829 (or 8827 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11111020012 its reverse (21002011111), we get a palindrome (32113031123).

The spelling of 11111020012 in words is "eleven billion, one hundred eleven million, twenty thousand, twelve".