12211111202011 has 4 divisors (see below), whose sum is σ = 12211270823752. Its totient is φ = 12210951580272.

The previous prime is 12211111201999. The next prime is 12211111202021. The reversal of 12211111202011 is 11020211111221.

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 12211111202011 - 2²⁹ = 12210574331099 is a prime.

It is a super-2 number, since 2×12211111202011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211111202021) 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, 79696065 + ... + 79849138.

It is an arithmetic number, because the mean of its divisors is an integer number (3052817705938).

Almost surely, 2^{12211111202011} is an apocalyptic number.

12211111202011 is a deficient number, since it is larger than the sum of its proper divisors (159621741).

12211111202011 is an equidigital number, since it uses as much as digits as its factorization.

12211111202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159621740.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 12211111202011 its reverse (11020211111221), we get a palindrome (23231322313232).

The spelling of 12211111202011 in words is "twelve trillion, two hundred eleven billion, one hundred eleven million, two hundred two thousand, eleven".