472222213 has 4 divisors (see below), whose sum is σ = 473255980. Its totient is φ = 471188448.

The previous prime is 472222211. The next prime is 472222229. The reversal of 472222213 is 312222274.

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

It can be written as a sum of positive squares in 2 ways, for example, as 299220804 + 173001409 = 17298^2 + 13153^2 .

It is a cyclic number.

It is not a de Polignac number, because 472222213 - 2¹ = 472222211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (472222211) 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 3 ways as a sum of consecutive naturals, for example, 516198 + ... + 517111.

It is an arithmetic number, because the mean of its divisors is an integer number (118313995).

Almost surely, 2^472222213 is an apocalyptic number.

It is an amenable number.

472222213 is a deficient number, since it is larger than the sum of its proper divisors (1033767).

472222213 is a wasteful number, since it uses less digits than its factorization.

472222213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033766.

The product of its digits is 2688, while the sum is 25.

The square root of 472222213 is about 21730.6744718152. The cubic root of 472222213 is about 778.7214496566.

Adding to 472222213 its reverse (312222274), we get a palindrome (784444487).

The spelling of 472222213 in words is "four hundred seventy-two million, two hundred twenty-two thousand, two hundred thirteen".