12202122212121 has 24 divisors (see below), whose sum is σ = 16680368789280. Its totient is φ = 7934256551680.

The previous prime is 12202122212087. The next prime is 12202122212131. The reversal of 12202122212121 is 12121222120221.

It is not a de Polignac number, because 12202122212121 - 2¹¹ = 12202122210073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12202122212131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19014190 + ... + 19645448.

It is an arithmetic number, because the mean of its divisors is an integer number (695015366220).

Almost surely, 2^{12202122212121} is an apocalyptic number.

It is an amenable number.

12202122212121 is a deficient number, since it is larger than the sum of its proper divisors (4478246577159).

12202122212121 is an equidigital number, since it uses as much as digits as its factorization.

12202122212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635177 (or 635136 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12202122212121 its reverse (12121222120221), we get a palindrome (24323344332342).

The spelling of 12202122212121 in words is "twelve trillion, two hundred two billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty-one".