213212602 has 4 divisors (see below), whose sum is σ = 319818906. Its totient is φ = 106606300.

The previous prime is 213212579. The next prime is 213212609. The reversal of 213212602 is 206212312.

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., 107143201 + 106069401 = 10351^2 + 10299^2 .

It is a super-3 number, since 3×213212602³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 213212602.

It is not an unprimeable number, because it can be changed into a prime (213212609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53303149 + ... + 53303152.

Almost surely, 2^213212602 is an apocalyptic number.

213212602 is a deficient number, since it is larger than the sum of its proper divisors (106606304).

213212602 is a wasteful number, since it uses less digits than its factorization.

213212602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106606303.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 213212602 is about 14601.8013272336. The cubic root of 213212602 is about 597.4078936937.

Adding to 213212602 its reverse (206212312), we get a palindrome (419424914).

The spelling of 213212602 in words is "two hundred thirteen million, two hundred twelve thousand, six hundred two".