102120110020111 has 4 divisors (see below), whose sum is σ = 102899652844824. Its totient is φ = 101340567195400.

The previous prime is 102120110020073. The next prime is 102120110020121. The reversal of 102120110020111 is 111020011021201.

It is a happy number.

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 102120110020111 - 2¹¹ = 102120110018063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102120110020091 and 102120110020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120110020121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389771412160 + ... + 389771412421.

It is an arithmetic number, because the mean of its divisors is an integer number (25724913211206).

Almost surely, 2^{102120110020111} is an apocalyptic number.

102120110020111 is a deficient number, since it is larger than the sum of its proper divisors (779542824713).

102120110020111 is an equidigital number, since it uses as much as digits as its factorization.

102120110020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779542824712.

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

Adding to 102120110020111 its reverse (111020011021201), we get a palindrome (213140121041312).

The spelling of 102120110020111 in words is "one hundred two trillion, one hundred twenty billion, one hundred ten million, twenty thousand, one hundred eleven".