11212011001111 has 4 divisors (see below), whose sum is σ = 11225535743800. Its totient is φ = 11198486258424.

The previous prime is 11212011001043. The next prime is 11212011001123. The reversal of 11212011001111 is 11110011021211.

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-11212011001111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212011001091 and 11212011001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212011001151) 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, 6762370101 + ... + 6762371758.

It is an arithmetic number, because the mean of its divisors is an integer number (2806383935950).

Almost surely, 2^{11212011001111} is an apocalyptic number.

11212011001111 is a deficient number, since it is larger than the sum of its proper divisors (13524742689).

11212011001111 is an equidigital number, since it uses as much as digits as its factorization.

11212011001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13524742688.

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

Adding to 11212011001111 its reverse (11110011021211), we get a palindrome (22322022022322).

The spelling of 11212011001111 in words is "eleven trillion, two hundred twelve billion, eleven million, one thousand, one hundred eleven".