11111002011 has 32 divisors (see below), whose sum is σ = 16708608000. Its totient is φ = 7296070464.

The previous prime is 11111002003. The next prime is 11111002033. The reversal of 11111002011 is 11020011111.

It is not a de Polignac number, because 11111002011 - 2³ = 11111002003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11111001984 and 11111002002.

It is not an unprimeable number, because it can be changed into a prime (11111002411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1650310 + ... + 1657028.

It is an arithmetic number, because the mean of its divisors is an integer number (522144000).

Almost surely, 2^11111002011 is an apocalyptic number.

11111002011 is a deficient number, since it is larger than the sum of its proper divisors (5597605989).

11111002011 is an equidigital number, since it uses as much as digits as its factorization.

11111002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7640 (or 7634 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11111002011 its reverse (11020011111), we get a palindrome (22131013122).

It can be divided in two parts, 1111100 and 2011, that added together give a palindrome (1113111).

The spelling of 11111002011 in words is "eleven billion, one hundred eleven million, two thousand, eleven".