12210122202221 has 4 divisors (see below), whose sum is σ = 12285030927552. Its totient is φ = 12135213476892.

The previous prime is 12210122202181. The next prime is 12210122202227. The reversal of 12210122202221 is 12220222101221.

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 12210122202221 - 2¹⁴ = 12210122185837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12210122202193 and 12210122202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210122202227) 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, 37454362421 + ... + 37454362746.

It is an arithmetic number, because the mean of its divisors is an integer number (3071257731888).

Almost surely, 2^{12210122202221} is an apocalyptic number.

It is an amenable number.

12210122202221 is a deficient number, since it is larger than the sum of its proper divisors (74908725331).

12210122202221 is an equidigital number, since it uses as much as digits as its factorization.

12210122202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74908725330.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12210122202221 its reverse (12220222101221), we get a palindrome (24430344303442).

The spelling of 12210122202221 in words is "twelve trillion, two hundred ten billion, one hundred twenty-two million, two hundred two thousand, two hundred twenty-one".