12200002001021 has 2 divisors, whose sum is σ = 12200002001022. Its totient is φ = 12200002001020.

The previous prime is 12200002000943. The next prime is 12200002001023. The reversal of 12200002001021 is 12010020000221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10763084349796 + 1436917651225 = 3280714^2 + 1198715^2 .

It is an emirp because it is prime and its reverse (12010020000221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12200002001021 - 2²⁶ = 12199934892157 is a prime.

Together with 12200002001023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12200002000993 and 12200002001011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12200002001023) 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, 6100001000510 + 6100001000511.

It is an arithmetic number, because the mean of its divisors is an integer number (6100001000511).

Almost surely, 2^{12200002001021} is an apocalyptic number.

It is an amenable number.

12200002001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12200002001021 is an equidigital number, since it uses as much as digits as its factorization.

12200002001021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12200002001021 its reverse (12010020000221), we get a palindrome (24210022001242).

The spelling of 12200002001021 in words is "twelve trillion, two hundred billion, two million, one thousand, twenty-one".