213225516111 has 4 divisors (see below), whose sum is σ = 284300688152. Its totient is φ = 142150344072.

The previous prime is 213225516103. The next prime is 213225516143. The reversal of 213225516111 is 111615522312.

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

It is not a de Polignac number, because 213225516111 - 2³ = 213225516103 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 (213225516181) 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, 35537586016 + ... + 35537586021.

It is an arithmetic number, because the mean of its divisors is an integer number (71075172038).

Almost surely, 2^213225516111 is an apocalyptic number.

213225516111 is a deficient number, since it is larger than the sum of its proper divisors (71075172041).

213225516111 is an equidigital number, since it uses as much as digits as its factorization.

213225516111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71075172040.

The product of its digits is 3600, while the sum is 30.

The spelling of 213225516111 in words is "two hundred thirteen billion, two hundred twenty-five million, five hundred sixteen thousand, one hundred eleven".