1200313321121 has 2 divisors, whose sum is σ = 1200313321122. Its totient is φ = 1200313321120.

The previous prime is 1200313321117. The next prime is 1200313321231. The reversal of 1200313321121 is 1211233130021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1195280837521 + 5032483600 = 1093289^2 + 70940^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200313321121 - 2² = 1200313321117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200313321093 and 1200313321102.

It is not a weakly prime, because it can be changed into another prime (1200313321021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600156660560 + 600156660561.

It is an arithmetic number, because the mean of its divisors is an integer number (600156660561).

Almost surely, 2^{1200313321121} is an apocalyptic number.

It is an amenable number.

1200313321121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200313321121 is an equidigital number, since it uses as much as digits as its factorization.

1200313321121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1200313321121 its reverse (1211233130021), we get a palindrome (2411546451142).

The spelling of 1200313321121 in words is "one trillion, two hundred billion, three hundred thirteen million, three hundred twenty-one thousand, one hundred twenty-one".