7211126 has 16 divisors (see below), whose sum is σ = 11697504. Its totient is φ = 3314304.

The previous prime is 7211119. The next prime is 7211129. The reversal of 7211126 is 6211127.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7211098 and 7211107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7211129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8351 + ... + 9173.

It is an arithmetic number, because the mean of its divisors is an integer number (731094).

Almost surely, 2^7211126 is an apocalyptic number.

7211126 is a deficient number, since it is larger than the sum of its proper divisors (4486378).

7211126 is a wasteful number, since it uses less digits than its factorization.

7211126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175.

The product of its digits is 168, while the sum is 20.

The square root of 7211126 is about 2685.3539803907. The cubic root of 7211126 is about 193.1972890183.

Subtracting from 7211126 its reverse (6211127), we obtain a palindrome (999999).

It can be divided in two parts, 7211 and 126, that added together give a palindrome (7337).

The spelling of 7211126 in words is "seven million, two hundred eleven thousand, one hundred twenty-six".