711422221 has 4 divisors (see below), whose sum is σ = 726558912. Its totient is φ = 696285532.

The previous prime is 711422213. The next prime is 711422251. The reversal of 711422221 is 122224117.

711422221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122224117 = 3109 ⋅39313.

It is a cyclic number.

It is not a de Polignac number, because 711422221 - 2³ = 711422213 is a prime.

It is a super-2 number, since 2×711422221² = 1012243153065145682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 711422192 and 711422201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (711422251) 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, 7568275 + ... + 7568368.

It is an arithmetic number, because the mean of its divisors is an integer number (181639728).

Almost surely, 2^711422221 is an apocalyptic number.

It is an amenable number.

711422221 is a deficient number, since it is larger than the sum of its proper divisors (15136691).

711422221 is a wasteful number, since it uses less digits than its factorization.

711422221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15136690.

The product of its digits is 448, while the sum is 22.

The square root of 711422221 is about 26672.4993392070. The cubic root of 711422221 is about 892.7074148049.

Adding to 711422221 its reverse (122224117), we get a palindrome (833646338).

The spelling of 711422221 in words is "seven hundred eleven million, four hundred twenty-two thousand, two hundred twenty-one".