1201132120121 has 2 divisors, whose sum is σ = 1201132120122. Its totient is φ = 1201132120120.

The previous prime is 1201132120099. The next prime is 1201132120193. The reversal of 1201132120121 is 1210212311021.

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., 1153143084025 + 47989036096 = 1073845^2 + 219064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201132120121 - 2²⁶ = 1201065011257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201132120121.

It is not a weakly prime, because it can be changed into another prime (1201132180121) by changing a digit.

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 as a sum of consecutive naturals, namely, 600566060060 + 600566060061.

It is an arithmetic number, because the mean of its divisors is an integer number (600566060061).

Almost surely, 2^{1201132120121} is an apocalyptic number.

It is an amenable number.

1201132120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201132120121 is an equidigital number, since it uses as much as digits as its factorization.

1201132120121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1201132120121 its reverse (1210212311021), we get a palindrome (2411344431142).

The spelling of 1201132120121 in words is "one trillion, two hundred one billion, one hundred thirty-two million, one hundred twenty thousand, one hundred twenty-one".