1200042322122 has 64 divisors (see below), whose sum is σ = 2749031550720. Its totient is φ = 342110055936.

The previous prime is 1200042322109. The next prime is 1200042322159. The reversal of 1200042322122 is 2212232400021.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63832828 + ... + 63851624.

It is an arithmetic number, because the mean of its divisors is an integer number (42953617980).

Almost surely, 2^{1200042322122} is an apocalyptic number.

1200042322122 is an abundant number, since it is smaller than the sum of its proper divisors (1548989228598).

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

1200042322122 is a wasteful number, since it uses less digits than its factorization.

1200042322122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22095.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 1200042322122 its reverse (2212232400021), we get a palindrome (3412274722143).

The spelling of 1200042322122 in words is "one trillion, two hundred billion, forty-two million, three hundred twenty-two thousand, one hundred twenty-two".