11020011111 has 6 divisors (see below), whose sum is σ = 15917793840. Its totient is φ = 7346674068.

The previous prime is 11020011103. The next prime is 11020011127. The reversal of 11020011111 is 11111002011.

It is not a de Polignac number, because 11020011111 - 2³ = 11020011103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1224445679 = 11020011111 / (1 + 1 + 0 + 2 + 0 + 0 + 1 + 1 + 1 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 11020011093 and 11020011102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020011131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 612222831 + ... + 612222848.

It is an arithmetic number, because the mean of its divisors is an integer number (2652965640).

Almost surely, 2^11020011111 is an apocalyptic number.

11020011111 is a deficient number, since it is larger than the sum of its proper divisors (4897782729).

11020011111 is a wasteful number, since it uses less digits than its factorization.

11020011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224445685 (or 1224445682 counting only the distinct ones).

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

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

The spelling of 11020011111 in words is "eleven billion, twenty million, eleven thousand, one hundred eleven".