12220122112021 has 4 divisors (see below), whose sum is σ = 12220130286112. Its totient is φ = 12220113937932.

The previous prime is 12220122112013. The next prime is 12220122112039. The reversal of 12220122112021 is 12021122102221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12220122112021 - 2³ = 12220122112013 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 12220122112021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220122112001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1132731 + ... + 5071816.

It is an arithmetic number, because the mean of its divisors is an integer number (3055032571528).

Almost surely, 2^{12220122112021} is an apocalyptic number.

It is an amenable number.

12220122112021 is a deficient number, since it is larger than the sum of its proper divisors (8174091).

12220122112021 is an equidigital number, since it uses as much as digits as its factorization.

12220122112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8174090.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12220122112021 its reverse (12021122102221), we get a palindrome (24241244214242).

The spelling of 12220122112021 in words is "twelve trillion, two hundred twenty billion, one hundred twenty-two million, one hundred twelve thousand, twenty-one".