12001112122 has 4 divisors (see below), whose sum is σ = 18001668186. Its totient is φ = 6000556060.

The previous prime is 12001112099. The next prime is 12001112153. The reversal of 12001112122 is 22121110021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22121110021 = 823 ⋅26878627.

It can be written as a sum of positive squares in only one way, i.e., 8835812001 + 3165300121 = 93999^2 + 56261^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3000278029 + ... + 3000278032.

Almost surely, 2^12001112122 is an apocalyptic number.

12001112122 is a deficient number, since it is larger than the sum of its proper divisors (6000556064).

12001112122 is an equidigital number, since it uses as much as digits as its factorization.

12001112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6000556063.

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

Adding to 12001112122 its reverse (22121110021), we get a palindrome (34122222143).

The spelling of 12001112122 in words is "twelve billion, one million, one hundred twelve thousand, one hundred twenty-two".