2112121043273 has 2 divisors, whose sum is σ = 2112121043274. Its totient is φ = 2112121043272.

The previous prime is 2112121043243. The next prime is 2112121043293. The reversal of 2112121043273 is 3723401212112.

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., 1464784940089 + 647336103184 = 1210283^2 + 804572^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112121043273 - 2¹⁴ = 2112121026889 is a prime.

It is a super-2 number, since 2×2112121043273² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2112121043233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056060521636 + 1056060521637.

It is an arithmetic number, because the mean of its divisors is an integer number (1056060521637).

Almost surely, 2^{2112121043273} is an apocalyptic number.

It is an amenable number.

2112121043273 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112121043273 is an equidigital number, since it uses as much as digits as its factorization.

2112121043273 is an evil number, because the sum of its binary digits is even.

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

Adding to 2112121043273 its reverse (3723401212112), we get a palindrome (5835522255385).

The spelling of 2112121043273 in words is "two trillion, one hundred twelve billion, one hundred twenty-one million, forty-three thousand, two hundred seventy-three".