812025126211 has 4 divisors (see below), whose sum is σ = 874488597472. Its totient is φ = 749561654952.

The previous prime is 812025126191. The next prime is 812025126251. The reversal of 812025126211 is 112621520218.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112621520218 = 2 ⋅56310760109.

It is a cyclic number.

It is not a de Polignac number, because 812025126211 - 2²⁷ = 811890908483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812025126251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31231735611 + ... + 31231735636.

It is an arithmetic number, because the mean of its divisors is an integer number (218622149368).

Almost surely, 2^812025126211 is an apocalyptic number.

812025126211 is a deficient number, since it is larger than the sum of its proper divisors (62463471261).

812025126211 is a wasteful number, since it uses less digits than its factorization.

812025126211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62463471260.

The product of its (nonzero) digits is 3840, while the sum is 31.

Adding to 812025126211 its reverse (112621520218), we get a palindrome (924646646429).

The spelling of 812025126211 in words is "eight hundred twelve billion, twenty-five million, one hundred twenty-six thousand, two hundred eleven".