102111000220111 has 4 divisors (see below), whose sum is σ = 102216160880424. Its totient is φ = 102005839559800.

The previous prime is 102111000220069. The next prime is 102111000220171. The reversal of 102111000220111 is 111022000111201.

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-102111000220111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102111000220091 and 102111000220100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111000220171) 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, 52580328700 + ... + 52580330641.

It is an arithmetic number, because the mean of its divisors is an integer number (25554040220106).

Almost surely, 2^{102111000220111} is an apocalyptic number.

102111000220111 is a deficient number, since it is larger than the sum of its proper divisors (105160660313).

102111000220111 is an equidigital number, since it uses as much as digits as its factorization.

102111000220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105160660312.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102111000220111 its reverse (111022000111201), we get a palindrome (213133000331312).

The spelling of 102111000220111 in words is "one hundred two trillion, one hundred eleven billion, two hundred twenty thousand, one hundred eleven".