113212103111 has 4 divisors (see below), whose sum is σ = 113213992224. Its totient is φ = 113210214000.

The previous prime is 113212103107. The next prime is 113212103131. The reversal of 113212103111 is 111301212311.

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

It is a cyclic number.

It is not a de Polignac number, because 113212103111 - 2² = 113212103107 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 113212103111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113212103131) 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, 851615 + ... + 975536.

It is an arithmetic number, because the mean of its divisors is an integer number (28303498056).

Almost surely, 2^113212103111 is an apocalyptic number.

113212103111 is a deficient number, since it is larger than the sum of its proper divisors (1889113).

113212103111 is an equidigital number, since it uses as much as digits as its factorization.

113212103111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889112.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 113212103111 its reverse (111301212311), we get a palindrome (224513315422).

The spelling of 113212103111 in words is "one hundred thirteen billion, two hundred twelve million, one hundred three thousand, one hundred eleven".