212132210111 has 4 divisors (see below), whose sum is σ = 212234149824. Its totient is φ = 212030270400.

The previous prime is 212132210077. The next prime is 212132210119. The reversal of 212132210111 is 111012231212.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212132210111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212132210111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212132210119) 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, 50966735 + ... + 50970896.

It is an arithmetic number, because the mean of its divisors is an integer number (53058537456).

Almost surely, 2^212132210111 is an apocalyptic number.

212132210111 is a deficient number, since it is larger than the sum of its proper divisors (101939713).

212132210111 is a wasteful number, since it uses less digits than its factorization.

212132210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101939712.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 212132210111 its reverse (111012231212), we get a palindrome (323144441323).

The spelling of 212132210111 in words is "two hundred twelve billion, one hundred thirty-two million, two hundred ten thousand, one hundred eleven".