12211010011111 has 4 divisors (see below), whose sum is σ = 12211090938424. Its totient is φ = 12210929083800.

The previous prime is 12211010011049. The next prime is 12211010011223. The reversal of 12211010011111 is 11111001011221.

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 12211010011111 - 2²¹ = 12211007913959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211010011091 and 12211010011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211010011511) 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, 40236900 + ... + 40539241.

It is an arithmetic number, because the mean of its divisors is an integer number (3052772734606).

Almost surely, 2^{12211010011111} is an apocalyptic number.

12211010011111 is a deficient number, since it is larger than the sum of its proper divisors (80927313).

12211010011111 is an equidigital number, since it uses as much as digits as its factorization.

12211010011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80927312.

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

Adding to 12211010011111 its reverse (11111001011221), we get a palindrome (23322011022332).

The spelling of 12211010011111 in words is "twelve trillion, two hundred eleven billion, ten million, eleven thousand, one hundred eleven".