12222020121 has 8 divisors (see below), whose sum is σ = 16298025504. Its totient is φ = 8147014080.

The previous prime is 12222020089. The next prime is 12222020131. The reversal of 12222020121 is 12102022221.

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

It is not a de Polignac number, because 12222020121 - 2⁵ = 12222020089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12222020121.

It is not an unprimeable number, because it can be changed into a prime (12222020131) 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, 220816 + ... + 270561.

It is an arithmetic number, because the mean of its divisors is an integer number (2037253188).

Almost surely, 2^12222020121 is an apocalyptic number.

It is an amenable number.

12222020121 is a deficient number, since it is larger than the sum of its proper divisors (4076005383).

12222020121 is an equidigital number, since it uses as much as digits as its factorization.

12222020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499671.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12222020121 its reverse (12102022221), we get a palindrome (24324042342).

The spelling of 12222020121 in words is "twelve billion, two hundred twenty-two million, twenty thousand, one hundred twenty-one".