213221002111 has 4 divisors (see below), whose sum is σ = 229622617672. Its totient is φ = 196819386552.

The previous prime is 213221002061. The next prime is 213221002153. The reversal of 213221002111 is 111200122312.

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

It is a cyclic number.

It is not a de Polignac number, because 213221002111 - 2¹¹ = 213221000063 is a prime.

It is a super-3 number, since 3×213221002111³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213221005111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8200807761 + ... + 8200807786.

It is an arithmetic number, because the mean of its divisors is an integer number (57405654418).

Almost surely, 2^213221002111 is an apocalyptic number.

213221002111 is a deficient number, since it is larger than the sum of its proper divisors (16401615561).

213221002111 is a wasteful number, since it uses less digits than its factorization.

213221002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16401615560.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 213221002111 its reverse (111200122312), we get a palindrome (324421124423).

The spelling of 213221002111 in words is "two hundred thirteen billion, two hundred twenty-one million, two thousand, one hundred eleven".