213022331111 has 4 divisors (see below), whose sum is σ = 213385231752. Its totient is φ = 212659430472.

The previous prime is 213022331029. The next prime is 213022331113. The reversal of 213022331111 is 111133220312.

It is a happy number.

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 213022331111 - 2¹⁴ = 213022314727 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 (213022331113) 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, 181449440 + ... + 181450613.

It is an arithmetic number, because the mean of its divisors is an integer number (53346307938).

Almost surely, 2^213022331111 is an apocalyptic number.

213022331111 is a deficient number, since it is larger than the sum of its proper divisors (362900641).

213022331111 is an equidigital number, since it uses as much as digits as its factorization.

213022331111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362900640.

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

Adding to 213022331111 its reverse (111133220312), we get a palindrome (324155551423).

The spelling of 213022331111 in words is "two hundred thirteen billion, twenty-two million, three hundred thirty-one thousand, one hundred eleven".