212301331111 has 16 divisors (see below), whose sum is σ = 234479831040. Its totient is φ = 191319939360.

The previous prime is 212301331079. The next prime is 212301331133. The reversal of 212301331111 is 111133103212.

It is a cyclic number.

It is not a de Polignac number, because 212301331111 - 2⁵ = 212301331079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212301331171) 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, 1262935 + ... + 1421128.

It is an arithmetic number, because the mean of its divisors is an integer number (14654989440).

Almost surely, 2^212301331111 is an apocalyptic number.

212301331111 is a deficient number, since it is larger than the sum of its proper divisors (22178499929).

212301331111 is a wasteful number, since it uses less digits than its factorization.

212301331111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684286.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 212301331111 its reverse (111133103212), we get a palindrome (323434434323).

The spelling of 212301331111 in words is "two hundred twelve billion, three hundred one million, three hundred thirty-one thousand, one hundred eleven".