12201121111011 has 8 divisors (see below), whose sum is σ = 18592184550144. Its totient is φ = 6972069206280.

The previous prime is 12201121110979. The next prime is 12201121111033. The reversal of 12201121111011 is 11011112110221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12201121111011 - 2⁵ = 12201121110979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12201121111051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290502883575 + ... + 290502883616.

It is an arithmetic number, because the mean of its divisors is an integer number (2324023068768).

Almost surely, 2^{12201121111011} is an apocalyptic number.

12201121111011 is a deficient number, since it is larger than the sum of its proper divisors (6391063439133).

12201121111011 is an equidigital number, since it uses as much as digits as its factorization.

12201121111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581005767201.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12201121111011 its reverse (11011112110221), we get a palindrome (23212233221232).

The spelling of 12201121111011 in words is "twelve trillion, two hundred one billion, one hundred twenty-one million, one hundred eleven thousand, eleven".