210120120111 has 16 divisors (see below), whose sum is σ = 305647822080. Its totient is φ = 127337795520.

The previous prime is 210120120079. The next prime is 210120120143. The reversal of 210120120111 is 111021021012.

210120120111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (210120120079) and next prime (210120120143).

It is not a de Polignac number, because 210120120111 - 2⁵ = 210120120079 is a prime.

It is a super-2 number, since 2×210120120111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210120120181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384211 + ... + 753563.

It is an arithmetic number, because the mean of its divisors is an integer number (19102988880).

Almost surely, 2^210120120111 is an apocalyptic number.

210120120111 is a deficient number, since it is larger than the sum of its proper divisors (95527701969).

210120120111 is a wasteful number, since it uses less digits than its factorization.

210120120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386606.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210120120111 its reverse (111021021012), we get a palindrome (321141141123).

Subtracting from 210120120111 its reverse (111021021012), we obtain a palindrome (99099099099).

The spelling of 210120120111 in words is "two hundred ten billion, one hundred twenty million, one hundred twenty thousand, one hundred eleven".