120101100111 has 20 divisors (see below), whose sum is σ = 182088059032. Its totient is φ = 78872360688.

The previous prime is 120101100109. The next prime is 120101100113. The reversal of 120101100111 is 111001101021.

It is an interprime number because it is at equal distance from previous prime (120101100109) and next prime (120101100113).

It is not a de Polignac number, because 120101100111 - 2¹ = 120101100109 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120101100093 and 120101100102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120101100113) 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 19 ways as a sum of consecutive naturals, for example, 11059720 + ... + 11070573.

Almost surely, 2^120101100111 is an apocalyptic number.

120101100111 is a deficient number, since it is larger than the sum of its proper divisors (61986958921).

120101100111 is an equidigital number, since it uses as much as digits as its factorization.

120101100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22130372 (or 22130363 counting only the distinct ones).

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

Adding to 120101100111 its reverse (111001101021), we get a palindrome (231102201132).

The spelling of 120101100111 in words is "one hundred twenty billion, one hundred one million, one hundred thousand, one hundred eleven".