12220121101211 has 4 divisors (see below), whose sum is σ = 12221525883000. Its totient is φ = 12218716319424.

The previous prime is 12220121101183. The next prime is 12220121101219. The reversal of 12220121101211 is 11210112102221.

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 12220121101211 - 2²⁶ = 12220053992347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12220121101211.

It is not an unprimeable number, because it can be changed into a prime (12220121101219) 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, 702377846 + ... + 702395243.

It is an arithmetic number, because the mean of its divisors is an integer number (3055381470750).

Almost surely, 2^{12220121101211} is an apocalyptic number.

12220121101211 is a deficient number, since it is larger than the sum of its proper divisors (1404781789).

12220121101211 is an equidigital number, since it uses as much as digits as its factorization.

12220121101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404781788.

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

Adding to 12220121101211 its reverse (11210112102221), we get a palindrome (23430233203432).

The spelling of 12220121101211 in words is "twelve trillion, two hundred twenty billion, one hundred twenty-one million, one hundred one thousand, two hundred eleven".