102311011220111 has 4 divisors (see below), whose sum is σ = 106759316055792. Its totient is φ = 97862706384432.

The previous prime is 102311011220087. The next prime is 102311011220129. The reversal of 102311011220111 is 111022110113201.

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

It is a de Polignac number, because none of the positive numbers 2^k-102311011220111 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 102311011220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102311011220191) 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, 2224152417806 + ... + 2224152417851.

It is an arithmetic number, because the mean of its divisors is an integer number (26689829013948).

Almost surely, 2^{102311011220111} is an apocalyptic number.

102311011220111 is a deficient number, since it is larger than the sum of its proper divisors (4448304835681).

102311011220111 is an equidigital number, since it uses as much as digits as its factorization.

102311011220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4448304835680.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 102311011220111 its reverse (111022110113201), we get a palindrome (213333121333312).

The spelling of 102311011220111 in words is "one hundred two trillion, three hundred eleven billion, eleven million, two hundred twenty thousand, one hundred eleven".