213022120111 has 4 divisors (see below), whose sum is σ = 213052632912. Its totient is φ = 212991607312.

The previous prime is 213022120097. The next prime is 213022120151. The reversal of 213022120111 is 111021220312.

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 213022120111 - 2⁵ = 213022120079 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 (213022120151) 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, 15245926 + ... + 15259891.

It is an arithmetic number, because the mean of its divisors is an integer number (53263158228).

Almost surely, 2^213022120111 is an apocalyptic number.

213022120111 is a deficient number, since it is larger than the sum of its proper divisors (30512801).

213022120111 is an equidigital number, since it uses as much as digits as its factorization.

213022120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30512800.

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

Adding to 213022120111 its reverse (111021220312), we get a palindrome (324043340423).

The spelling of 213022120111 in words is "two hundred thirteen billion, twenty-two million, one hundred twenty thousand, one hundred eleven".