2112120421441 has 2 divisors, whose sum is σ = 2112120421442. Its totient is φ = 2112120421440.

The previous prime is 2112120421373. The next prime is 2112120421447. The reversal of 2112120421441 is 1441240212112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2043195795216 + 68924626225 = 1429404^2 + 262535^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112120421441 - 2¹¹ = 2112120419393 is a prime.

It is a super-2 number, since 2×2112120421441² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2112120421447) 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, 1056060210720 + 1056060210721.

It is an arithmetic number, because the mean of its divisors is an integer number (1056060210721).

Almost surely, 2^{2112120421441} is an apocalyptic number.

It is an amenable number.

2112120421441 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112120421441 is an equidigital number, since it uses as much as digits as its factorization.

2112120421441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 2112120421441 its reverse (1441240212112), we get a palindrome (3553360633553).

The spelling of 2112120421441 in words is "two trillion, one hundred twelve billion, one hundred twenty million, four hundred twenty-one thousand, four hundred forty-one".