12222021211021 has 16 divisors (see below), whose sum is σ = 12369310720000. Its totient is φ = 12075297656688.

The previous prime is 12222021210991. The next prime is 12222021211027. The reversal of 12222021211021 is 12011212022221.

It is a cyclic number.

It is not a de Polignac number, because 12222021211021 - 2²⁵ = 12221987656589 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 12222021211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222021211027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170550820 + ... + 170622466.

It is an arithmetic number, because the mean of its divisors is an integer number (773081920000).

Almost surely, 2^{12222021211021} is an apocalyptic number.

It is an amenable number.

12222021211021 is a deficient number, since it is larger than the sum of its proper divisors (147289508979).

12222021211021 is a wasteful number, since it uses less digits than its factorization.

12222021211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75568.

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

Adding to 12222021211021 its reverse (12011212022221), we get a palindrome (24233233233242).

The spelling of 12222021211021 in words is "twelve trillion, two hundred twenty-two billion, twenty-one million, two hundred eleven thousand, twenty-one".