1200022122112 has 32 divisors (see below), whose sum is σ = 2608002626400. Its totient is φ = 545464600320.

The previous prime is 1200022122109. The next prime is 1200022122151. The reversal of 1200022122112 is 2112212200021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426142812 + ... + 426145627.

It is an arithmetic number, because the mean of its divisors is an integer number (81500082075).

Almost surely, 2^{1200022122112} is an apocalyptic number.

It is an amenable number.

1200022122112 is an abundant number, since it is smaller than the sum of its proper divisors (1407980504288).

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

1200022122112 is an equidigital number, since it uses as much as digits as its factorization.

1200022122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852288464 (or 852288452 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1200022122112 its reverse (2112212200021), we get a palindrome (3312234322133).

The spelling of 1200022122112 in words is "one trillion, two hundred billion, twenty-two million, one hundred twenty-two thousand, one hundred twelve".