12122021021401 has 2 divisors, whose sum is σ = 12122021021402. Its totient is φ = 12122021021400.

The previous prime is 12122021021399. The next prime is 12122021021431. The reversal of 12122021021401 is 10412012022121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8241199821001 + 3880821200400 = 2870749^2 + 1969980^2 .

It is an emirp because it is prime and its reverse (10412012022121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12122021021401 - 2¹ = 12122021021399 is a prime.

Together with 12122021021399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12122021021431) 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, 6061010510700 + 6061010510701.

It is an arithmetic number, because the mean of its divisors is an integer number (6061010510701).

Almost surely, 2^{12122021021401} is an apocalyptic number.

It is an amenable number.

12122021021401 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122021021401 is an equidigital number, since it uses as much as digits as its factorization.

12122021021401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12122021021401 its reverse (10412012022121), we get a palindrome (22534033043522).

The spelling of 12122021021401 in words is "twelve trillion, one hundred twenty-two billion, twenty-one million, twenty-one thousand, four hundred one".