120102020111 has 4 divisors (see below), whose sum is σ = 120105020112. Its totient is φ = 120099020112.

The previous prime is 120102020047. The next prime is 120102020123. The reversal of 120102020111 is 111020201021.

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 120102020111 - 2⁶ = 120102020047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120102020092 and 120102020101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120102020131) 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, 1439126 + ... + 1520291.

It is an arithmetic number, because the mean of its divisors is an integer number (30026255028).

Almost surely, 2^120102020111 is an apocalyptic number.

120102020111 is a deficient number, since it is larger than the sum of its proper divisors (3000001).

120102020111 is an equidigital number, since it uses as much as digits as its factorization.

120102020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000000.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 120102020111 its reverse (111020201021), we get a palindrome (231122221132).

The spelling of 120102020111 in words is "one hundred twenty billion, one hundred two million, twenty thousand, one hundred eleven".