12121202211011 has 4 divisors (see below), whose sum is σ = 12121391011392. Its totient is φ = 12121013410632.

The previous prime is 12121202211007. The next prime is 12121202211149. The reversal of 12121202211011 is 11011220212121.

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 12121202211011 - 2² = 12121202211007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121201211011) 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, 94303856 + ... + 94432301.

It is an arithmetic number, because the mean of its divisors is an integer number (3030347752848).

Almost surely, 2^{12121202211011} is an apocalyptic number.

12121202211011 is a deficient number, since it is larger than the sum of its proper divisors (188800381).

12121202211011 is an equidigital number, since it uses as much as digits as its factorization.

12121202211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188800380.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12121202211011 its reverse (11011220212121), we get a palindrome (23132422423132).

The spelling of 12121202211011 in words is "twelve trillion, one hundred twenty-one billion, two hundred two million, two hundred eleven thousand, eleven".