11111020011011 has 8 divisors (see below), whose sum is σ = 11120913343584. Its totient is φ = 11101128001600.

The previous prime is 11111020010977. The next prime is 11111020011023. The reversal of 11111020011011 is 11011002011111.

It is a happy number.

11111020011011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11111020011011 - 2¹⁰ = 11111020009987 is a prime.

It is a super-2 number, since 2×11111020011011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111020010983 and 11111020011001.

It is not an unprimeable number, because it can be changed into a prime (11111020011031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16868561 + ... + 17514861.

It is an arithmetic number, because the mean of its divisors is an integer number (1390114167948).

Almost surely, 2^{11111020011011} is an apocalyptic number.

11111020011011 is a deficient number, since it is larger than the sum of its proper divisors (9893332573).

11111020011011 is a wasteful number, since it uses less digits than its factorization.

11111020011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661581.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 11111020011011 its reverse (11011002011111), we get a palindrome (22122022022122).

The spelling of 11111020011011 in words is "eleven trillion, one hundred eleven billion, twenty million, eleven thousand, eleven".