212112232113 has 4 divisors (see below), whose sum is σ = 282816309488. Its totient is φ = 141408154740.

The previous prime is 212112232109. The next prime is 212112232207. The reversal of 212112232113 is 311232211212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 212112232113 - 2² = 212112232109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212112232113.

It is not an unprimeable number, because it can be changed into a prime (212112242113) 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, 35352038683 + ... + 35352038688.

It is an arithmetic number, because the mean of its divisors is an integer number (70704077372).

Almost surely, 2^212112232113 is an apocalyptic number.

It is an amenable number.

212112232113 is a deficient number, since it is larger than the sum of its proper divisors (70704077375).

212112232113 is an equidigital number, since it uses as much as digits as its factorization.

212112232113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70704077374.

The product of its digits is 288, while the sum is 21.

Adding to 212112232113 its reverse (311232211212), we get a palindrome (523344443325).

The spelling of 212112232113 in words is "two hundred twelve billion, one hundred twelve million, two hundred thirty-two thousand, one hundred thirteen".