12000001122 has 40 divisors (see below), whose sum is σ = 27094198032. Its totient is φ = 3969459000.

The previous prime is 12000001051. The next prime is 12000001129. The reversal of 12000001122 is 22110000021.

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

It is not an unprimeable number, because it can be changed into a prime (12000001129) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 261504 + ... + 303947.

Almost surely, 2^12000001122 is an apocalyptic number.

12000001122 is an abundant number, since it is smaller than the sum of its proper divisors (15094196910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12000001122 is a wasteful number, since it uses less digits than its factorization.

12000001122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565596 (or 565587 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12000001122 its reverse (22110000021), we get a palindrome (34110001143).

The spelling of 12000001122 in words is "twelve billion, one thousand, one hundred twenty-two".