12001121122 has 8 divisors (see below), whose sum is σ = 18002147436. Its totient is φ = 6000405312.

The previous prime is 12001121089. The next prime is 12001121149. The reversal of 12001121122 is 22112110021.

It can be written as a sum of positive squares in 2 ways, for example, as 10210900401 + 1790220721 = 101049^2 + 42311^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103918 + ... + 186550.

Almost surely, 2^12001121122 is an apocalyptic number.

12001121122 is a deficient number, since it is larger than the sum of its proper divisors (6001026314).

12001121122 is an equidigital number, since it uses as much as digits as its factorization.

12001121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155252.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12001121122 its reverse (22112110021), we get a palindrome (34113231143).

The spelling of 12001121122 in words is "twelve billion, one million, one hundred twenty-one thousand, one hundred twenty-two".