2112120423401 has 2 divisors, whose sum is σ = 2112120423402. Its totient is φ = 2112120423400.

The previous prime is 2112120423397. The next prime is 2112120423407. The reversal of 2112120423401 is 1043240212112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2064049422400 + 48071001001 = 1436680^2 + 219251^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112120423401 - 2² = 2112120423397 is a prime.

It is a super-2 number, since 2×2112120423401² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2112120423407) 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, 1056060211700 + 1056060211701.

It is an arithmetic number, because the mean of its divisors is an integer number (1056060211701).

Almost surely, 2^{2112120423401} is an apocalyptic number.

It is an amenable number.

2112120423401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112120423401 is an equidigital number, since it uses as much as digits as its factorization.

2112120423401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 2112120423401 its reverse (1043240212112), we get a palindrome (3155360635513).

The spelling of 2112120423401 in words is "two trillion, one hundred twelve billion, one hundred twenty million, four hundred twenty-three thousand, four hundred one".