211112331113 has 4 divisors (see below), whose sum is σ = 211113253188. Its totient is φ = 211111409040.

The previous prime is 211112331103. The next prime is 211112331139. The reversal of 211112331113 is 311133211112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 115945017049 + 95167314064 = 340507^2 + 308492^2 .

It is a cyclic number.

It is not a de Polignac number, because 211112331113 - 2⁸ = 211112330857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211112331103) 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, 173543 + ... + 672563.

It is an arithmetic number, because the mean of its divisors is an integer number (52778313297).

Almost surely, 2^211112331113 is an apocalyptic number.

It is an amenable number.

211112331113 is a deficient number, since it is larger than the sum of its proper divisors (922075).

211112331113 is an equidigital number, since it uses as much as digits as its factorization.

211112331113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922074.

The product of its digits is 108, while the sum is 20.

Adding to 211112331113 its reverse (311133211112), we get a palindrome (522245542225).

The spelling of 211112331113 in words is "two hundred eleven billion, one hundred twelve million, three hundred thirty-one thousand, one hundred thirteen".