120101010111 has 24 divisors (see below), whose sum is σ = 173772256320. Its totient is φ = 79932225600.

The previous prime is 120101010109. The next prime is 120101010179. The reversal of 120101010111 is 111010101021.

It is not a de Polignac number, because 120101010111 - 2¹ = 120101010109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 120101010093 and 120101010102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120101010191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15475050 + ... + 15482808.

It is an arithmetic number, because the mean of its divisors is an integer number (7240510680).

Almost surely, 2^120101010111 is an apocalyptic number.

120101010111 is a deficient number, since it is larger than the sum of its proper divisors (53671246209).

120101010111 is a wasteful number, since it uses less digits than its factorization.

120101010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10447 (or 10444 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 120101010111 its reverse (111010101021), we get a palindrome (231111111132).

It can be divided in two parts, 1201010 and 10111, that added together give a palindrome (1211121).

The spelling of 120101010111 in words is "one hundred twenty billion, one hundred one million, ten thousand, one hundred eleven".