7211122 has 4 divisors (see below), whose sum is σ = 10816686. Its totient is φ = 3605560.

The previous prime is 7211119. The next prime is 7211129. The reversal of 7211122 is 2211127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5331481 + 1879641 = 2309^2 + 1371^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7211096 and 7211105.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1802779 + ... + 1802782.

Almost surely, 2^7211122 is an apocalyptic number.

7211122 is a deficient number, since it is larger than the sum of its proper divisors (3605564).

7211122 is a wasteful number, since it uses less digits than its factorization.

7211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605563.

The product of its digits is 56, while the sum is 16.

The square root of 7211122 is about 2685.3532356098. The cubic root of 7211122 is about 193.1972532962.

Adding to 7211122 its reverse (2211127), we get a palindrome (9422249).

The spelling of 7211122 in words is "seven million, two hundred eleven thousand, one hundred twenty-two".