12200211200921 has 2 divisors, whose sum is σ = 12200211200922. Its totient is φ = 12200211200920.

The previous prime is 12200211200917. The next prime is 12200211200923. The reversal of 12200211200921 is 12900211200221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8520677760400 + 3679533440521 = 2919020^2 + 1918211^2 .

It is a cyclic number.

It is not a de Polignac number, because 12200211200921 - 2² = 12200211200917 is a prime.

Together with 12200211200923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12200211200923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100105600460 + 6100105600461.

It is an arithmetic number, because the mean of its divisors is an integer number (6100105600461).

Almost surely, 2^{12200211200921} is an apocalyptic number.

It is an amenable number.

12200211200921 is a deficient number, since it is larger than the sum of its proper divisors (1).

12200211200921 is an equidigital number, since it uses as much as digits as its factorization.

12200211200921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 12200211200921 in words is "twelve trillion, two hundred billion, two hundred eleven million, two hundred thousand, nine hundred twenty-one".