213142020111 has 16 divisors (see below), whose sum is σ = 315912705120. Its totient is φ = 142028642880.

The previous prime is 213142020109. The next prime is 213142020163. The reversal of 213142020111 is 111020241312.

213142020111 is a `hidden beast` number, since 2 + 1 + 31 + 420 + 201 + 11 = 666.

It is not a de Polignac number, because 213142020111 - 2¹ = 213142020109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213142020191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1775160 + ... + 1891421.

It is an arithmetic number, because the mean of its divisors is an integer number (19744544070).

Almost surely, 2^213142020111 is an apocalyptic number.

213142020111 is a deficient number, since it is larger than the sum of its proper divisors (102770685009).

213142020111 is a wasteful number, since it uses less digits than its factorization.

213142020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668743 (or 3668737 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 213142020111 its reverse (111020241312), we get a palindrome (324162261423).

The spelling of 213142020111 in words is "two hundred thirteen billion, one hundred forty-two million, twenty thousand, one hundred eleven".