120012111101 has 4 divisors (see below), whose sum is σ = 122939235804. Its totient is φ = 117084986400.

The previous prime is 120012111029. The next prime is 120012111181. The reversal of 120012111101 is 101111210021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101111210021 = 29 ⋅3486593449.

It can be written as a sum of positive squares in 2 ways, for example, as 12116285476 + 107895825625 = 110074^2 + 328475^2 .

It is a cyclic number.

It is not a de Polignac number, because 120012111101 - 2²⁶ = 119945002237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120012111181) 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, 1463562290 + ... + 1463562371.

It is an arithmetic number, because the mean of its divisors is an integer number (30734808951).

Almost surely, 2^120012111101 is an apocalyptic number.

It is an amenable number.

120012111101 is a deficient number, since it is larger than the sum of its proper divisors (2927124703).

120012111101 is an equidigital number, since it uses as much as digits as its factorization.

120012111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927124702.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 120012111101 its reverse (101111210021), we get a palindrome (221123321122).

The spelling of 120012111101 in words is "one hundred twenty billion, twelve million, one hundred eleven thousand, one hundred one".