213213301211 has 4 divisors (see below), whose sum is σ = 213214687752. Its totient is φ = 213211914672.

The previous prime is 213213301127. The next prime is 213213301271. The reversal of 213213301211 is 112103312312.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213213301211 is a prime.

It is a super-2 number, since 2×213213301211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213213301271) 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 in 3 ways as a sum of consecutive naturals, for example, 429041 + ... + 781346.

It is an arithmetic number, because the mean of its divisors is an integer number (53303671938).

Almost surely, 2^213213301211 is an apocalyptic number.

213213301211 is a deficient number, since it is larger than the sum of its proper divisors (1386541).

213213301211 is a wasteful number, since it uses less digits than its factorization.

213213301211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386540.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 213213301211 its reverse (112103312312), we get a palindrome (325316613523).

The spelling of 213213301211 in words is "two hundred thirteen billion, two hundred thirteen million, three hundred one thousand, two hundred eleven".