213142111 has 12 divisors (see below), whose sum is σ = 267013992. Its totient is φ = 168639408.

The previous prime is 213142103. The next prime is 213142121. The reversal of 213142111 is 111241312.

It is not a de Polignac number, because 213142111 - 2³ = 213142103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213142121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166665 + ... + 167938.

It is an arithmetic number, because the mean of its divisors is an integer number (22251166).

Almost surely, 2^213142111 is an apocalyptic number.

213142111 is a deficient number, since it is larger than the sum of its proper divisors (53871881).

213142111 is a wasteful number, since it uses less digits than its factorization.

213142111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334630 (or 334623 counting only the distinct ones).

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

The square root of 213142111 is about 14599.3873501596. The cubic root of 213142111 is about 597.3420493655.

Adding to 213142111 its reverse (111241312), we get a palindrome (324383423).

The spelling of 213142111 in words is "two hundred thirteen million, one hundred forty-two thousand, one hundred eleven".