11111021102011 has 4 divisors (see below), whose sum is σ = 11148942676032. Its totient is φ = 11073099527992.

The previous prime is 11111021101969. The next prime is 11111021102029. The reversal of 11111021102011 is 11020112011111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111021102011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111021101982 and 11111021102000.

It is not an unprimeable number, because it can be changed into a prime (11111021102611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18960786571 + ... + 18960787156.

It is an arithmetic number, because the mean of its divisors is an integer number (2787235669008).

Almost surely, 2^{11111021102011} is an apocalyptic number.

11111021102011 is a deficient number, since it is larger than the sum of its proper divisors (37921574021).

11111021102011 is an equidigital number, since it uses as much as digits as its factorization.

11111021102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37921574020.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11111021102011 its reverse (11020112011111), we get a palindrome (22131133113122).

The spelling of 11111021102011 in words is "eleven trillion, one hundred eleven billion, twenty-one million, one hundred two thousand, eleven".