2112120421373 has 2 divisors, whose sum is σ = 2112120421374. Its totient is φ = 2112120421372.

The previous prime is 2112120421337. The next prime is 2112120421441. The reversal of 2112120421373 is 3731240212112.

It is a happy number.

Together with previous prime (2112120421337) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1639329411769 + 472791009604 = 1280363^2 + 687598^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112120421373 - 2¹⁸ = 2112120159229 is a prime.

It is a super-2 number, since 2×2112120421373² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112120421573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056060210686 + 1056060210687.

It is an arithmetic number, because the mean of its divisors is an integer number (1056060210687).

Almost surely, 2^{2112120421373} is an apocalyptic number.

It is an amenable number.

2112120421373 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112120421373 is an equidigital number, since it uses as much as digits as its factorization.

2112120421373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 2112120421373 its reverse (3731240212112), we get a palindrome (5843360633485).

The spelling of 2112120421373 in words is "two trillion, one hundred twelve billion, one hundred twenty million, four hundred twenty-one thousand, three hundred seventy-three".