111102121111211 has 4 divisors (see below), whose sum is σ = 111431800996152. Its totient is φ = 110772441226272.

The previous prime is 111102121111199. The next prime is 111102121111213. The reversal of 111102121111211 is 112111121201111.

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-111102121111211 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 111102121111211.

It is not an unprimeable number, because it can be changed into a prime (111102121111213) 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, 164839941965 + ... + 164839942638.

It is an arithmetic number, because the mean of its divisors is an integer number (27857950249038).

Almost surely, 2^{111102121111211} is an apocalyptic number.

111102121111211 is a deficient number, since it is larger than the sum of its proper divisors (329679884941).

111102121111211 is an equidigital number, since it uses as much as digits as its factorization.

111102121111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329679884940.

The product of its (nonzero) digits is 8, while the sum is 17.

Adding to 111102121111211 its reverse (112111121201111), we get a palindrome (223213242312322).

The spelling of 111102121111211 in words is "one hundred eleven trillion, one hundred two billion, one hundred twenty-one million, one hundred eleven thousand, two hundred eleven".