12200122222021 has 2 divisors, whose sum is σ = 12200122222022. Its totient is φ = 12200122222020.

The previous prime is 12200122221883. The next prime is 12200122222091. The reversal of 12200122222021 is 12022222100221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10746687029796 + 1453435192225 = 3278214^2 + 1205585^2 .

It is an emirp because it is prime and its reverse (12022222100221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12200122222021 - 2²⁷ = 12199988004293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12200122222021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12200122222091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100061111010 + 6100061111011.

It is an arithmetic number, because the mean of its divisors is an integer number (6100061111011).

Almost surely, 2^{12200122222021} is an apocalyptic number.

It is an amenable number.

12200122222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12200122222021 is an equidigital number, since it uses as much as digits as its factorization.

12200122222021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12200122222021 its reverse (12022222100221), we get a palindrome (24222344322242).

The spelling of 12200122222021 in words is "twelve trillion, two hundred billion, one hundred twenty-two million, two hundred twenty-two thousand, twenty-one".