12210100222121 has 2 divisors, whose sum is σ = 12210100222122. Its totient is φ = 12210100222120.

The previous prime is 12210100222093. The next prime is 12210100222139. The reversal of 12210100222121 is 12122200101221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10891082426896 + 1319017795225 = 3300164^2 + 1148485^2 .

It is a cyclic number.

It is not a de Polignac number, because 12210100222121 - 2⁶ = 12210100222057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12210100222121.

It is not a weakly prime, because it can be changed into another prime (12210100224121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105050111060 + 6105050111061.

It is an arithmetic number, because the mean of its divisors is an integer number (6105050111061).

Almost surely, 2^{12210100222121} is an apocalyptic number.

It is an amenable number.

12210100222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210100222121 is an equidigital number, since it uses as much as digits as its factorization.

12210100222121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12210100222121 its reverse (12122200101221), we get a palindrome (24332300323342).

The spelling of 12210100222121 in words is "twelve trillion, two hundred ten billion, one hundred million, two hundred twenty-two thousand, one hundred twenty-one".