12201222211951 has 2 divisors, whose sum is σ = 12201222211952. Its totient is φ = 12201222211950.

The previous prime is 12201222211949. The next prime is 12201222212009. The reversal of 12201222211951 is 15911222210221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12201222211951 - 2¹ = 12201222211949 is a prime.

Together with 12201222211949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12201222211901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100611105975 + 6100611105976.

It is an arithmetic number, because the mean of its divisors is an integer number (6100611105976).

Almost surely, 2^{12201222211951} is an apocalyptic number.

12201222211951 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201222211951 is an equidigital number, since it uses as much as digits as its factorization.

12201222211951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 31.

The spelling of 12201222211951 in words is "twelve trillion, two hundred one billion, two hundred twenty-two million, two hundred eleven thousand, nine hundred fifty-one".