213231102111 has 12 divisors (see below), whose sum is σ = 308019937680. Its totient is φ = 142145088000.

The previous prime is 213231102107. The next prime is 213231102137. The reversal of 213231102111 is 111201132312.

213231102111 is a `hidden beast` number, since 21 + 323 + 110 + 211 + 1 = 666.

It is not a de Polignac number, because 213231102111 - 2² = 213231102107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213241102111) 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, 596331 + ... + 884348.

It is an arithmetic number, because the mean of its divisors is an integer number (25668328140).

Almost surely, 2^213231102111 is an apocalyptic number.

213231102111 is a deficient number, since it is larger than the sum of its proper divisors (94788835569).

213231102111 is a wasteful number, since it uses less digits than its factorization.

213231102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496686 (or 1496683 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 213231102111 its reverse (111201132312), we get a palindrome (324432234423).

The spelling of 213231102111 in words is "two hundred thirteen billion, two hundred thirty-one million, one hundred two thousand, one hundred eleven".