1201321322112 has 32 divisors (see below), whose sum is σ = 3191009762880. Its totient is φ = 400440440576.

The previous prime is 1201321322111. The next prime is 1201321322147. The reversal of 1201321322112 is 2112231231021.

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

It is not an unprimeable number, because it can be changed into a prime (1201321322111) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1564220088 + ... + 1564220855.

It is an arithmetic number, because the mean of its divisors is an integer number (99719055090).

Almost surely, 2^{1201321322112} is an apocalyptic number.

1201321322112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201321322112 is an abundant number, since it is smaller than the sum of its proper divisors (1989688440768).

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

1201321322112 is an equidigital number, since it uses as much as digits as its factorization.

1201321322112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128440960 (or 3128440948 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1201321322112 its reverse (2112231231021), we get a palindrome (3313552553133).

The spelling of 1201321322112 in words is "one trillion, two hundred one billion, three hundred twenty-one million, three hundred twenty-two thousand, one hundred twelve".