2112211121173 has 2 divisors, whose sum is σ = 2112211121174. Its totient is φ = 2112211121172.

The previous prime is 2112211121149. The next prime is 2112211121263. The reversal of 2112211121173 is 3711211122112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1285724674404 + 826486446769 = 1133898^2 + 909113^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112211121173 - 2²¹ = 2112209024021 is a prime.

It is a super-2 number, since 2×2112211121173² (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 (2112211128173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056105560586 + 1056105560587.

It is an arithmetic number, because the mean of its divisors is an integer number (1056105560587).

Almost surely, 2^{2112211121173} is an apocalyptic number.

It is an amenable number.

2112211121173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112211121173 is an equidigital number, since it uses as much as digits as its factorization.

2112211121173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 25.

Adding to 2112211121173 its reverse (3711211122112), we get a palindrome (5823422243285).

The spelling of 2112211121173 in words is "two trillion, one hundred twelve billion, two hundred eleven million, one hundred twenty-one thousand, one hundred seventy-three".