1201122001312 has 12 divisors (see below), whose sum is σ = 2364708940146. Its totient is φ = 600561000640.

The previous prime is 1201122001229. The next prime is 1201122001319. The reversal of 1201122001312 is 2131002211021.

It can be written as a sum of positive squares in only one way, i.e., 1189835913616 + 11286087696 = 1090796^2 + 106236^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1201122001319) 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 as a sum of consecutive naturals, namely, 18767531239 + ... + 18767531302.

Almost surely, 2^{1201122001312} is an apocalyptic number.

It is an amenable number.

1201122001312 is a deficient number, since it is larger than the sum of its proper divisors (1163586938834).

1201122001312 is an equidigital number, since it uses as much as digits as its factorization.

1201122001312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37535062551 (or 37535062543 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1201122001312 its reverse (2131002211021), we get a palindrome (3332124212333).

The spelling of 1201122001312 in words is "one trillion, two hundred one billion, one hundred twenty-two million, one thousand, three hundred twelve".