12220022220121 has 4 divisors (see below), whose sum is σ = 12300949519744. Its totient is φ = 12139094920500.

The previous prime is 12220022220071. The next prime is 12220022220127. The reversal of 12220022220121 is 12102222002221.

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.

It is a cyclic number.

It is not a de Polignac number, because 12220022220121 - 2⁹ = 12220022219609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220022220127) 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, 40463649585 + ... + 40463649886.

It is an arithmetic number, because the mean of its divisors is an integer number (3075237379936).

Almost surely, 2^{12220022220121} is an apocalyptic number.

It is an amenable number.

12220022220121 is a deficient number, since it is larger than the sum of its proper divisors (80927299623).

12220022220121 is an equidigital number, since it uses as much as digits as its factorization.

12220022220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80927299622.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12220022220121 its reverse (12102222002221), we get a palindrome (24322244222342).

The spelling of 12220022220121 in words is "twelve trillion, two hundred twenty billion, twenty-two million, two hundred twenty thousand, one hundred twenty-one".