120112212005 has 4 divisors (see below), whose sum is σ = 144134654412. Its totient is φ = 96089769600.

The previous prime is 120112211981. The next prime is 120112212007. The reversal of 120112212005 is 500212211021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17746769089 + 102365442916 = 133217^2 + 319946^2 .

It is a de Polignac number, because none of the positive numbers 2^k-120112212005 is a prime.

It is a super-2 number, since 2×120112212005² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120112212007) 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 3 ways as a sum of consecutive naturals, for example, 12011221196 + ... + 12011221205.

It is an arithmetic number, because the mean of its divisors is an integer number (36033663603).

Almost surely, 2^120112212005 is an apocalyptic number.

It is an amenable number.

120112212005 is a deficient number, since it is larger than the sum of its proper divisors (24022442407).

120112212005 is an equidigital number, since it uses as much as digits as its factorization.

120112212005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24022442406.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 120112212005 its reverse (500212211021), we get a palindrome (620324423026).

The spelling of 120112212005 in words is "one hundred twenty billion, one hundred twelve million, two hundred twelve thousand, five".