11121211000111 has 4 divisors (see below), whose sum is σ = 11125396629792. Its totient is φ = 11117025370432.

The previous prime is 11121211000049. The next prime is 11121211000199. The reversal of 11121211000111 is 11100011212111.

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

It is a cyclic number.

It is not a de Polignac number, because 11121211000111 - 2¹⁵ = 11121210967343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121211000091 and 11121211000100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121211000411) 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, 2092810855 + ... + 2092816168.

It is an arithmetic number, because the mean of its divisors is an integer number (2781349157448).

Almost surely, 2^{11121211000111} is an apocalyptic number.

11121211000111 is a deficient number, since it is larger than the sum of its proper divisors (4185629681).

11121211000111 is an equidigital number, since it uses as much as digits as its factorization.

11121211000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4185629680.

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

Adding to 11121211000111 its reverse (11100011212111), we get a palindrome (22221222212222).

The spelling of 11121211000111 in words is "eleven trillion, one hundred twenty-one billion, two hundred eleven million, one hundred eleven", and thus it is an aban number.