38212213 has 4 divisors (see below), whose sum is σ = 41151628. Its totient is φ = 35272800.

The previous prime is 38212201. The next prime is 38212219. The reversal of 38212213 is 31221283.

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 11410884 + 26801329 = 3378^2 + 5177^2 .

It is a cyclic number.

It is not a de Polignac number, because 38212213 - 2¹³ = 38204021 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 (38212219) 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, 1469688 + ... + 1469713.

It is an arithmetic number, because the mean of its divisors is an integer number (10287907).

Almost surely, 2^38212213 is an apocalyptic number.

It is an amenable number.

38212213 is a deficient number, since it is larger than the sum of its proper divisors (2939415).

38212213 is a wasteful number, since it uses less digits than its factorization.

38212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939414.

The product of its digits is 576, while the sum is 22.

The square root of 38212213 is about 6181.6027856859. The cubic root of 38212213 is about 336.8222168934.

Adding to 38212213 its reverse (31221283), we get a palindrome (69433496).

The spelling of 38212213 in words is "thirty-eight million, two hundred twelve thousand, two hundred thirteen".