1121312310121 has 2 divisors, whose sum is σ = 1121312310122. Its totient is φ = 1121312310120.

The previous prime is 1121312310119. The next prime is 1121312310191. The reversal of 1121312310121 is 1210132131211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 810828211600 + 310484098521 = 900460^2 + 557211^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121312310121 - 2¹ = 1121312310119 is a prime.

Together with 1121312310119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1121312310191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560656155060 + 560656155061.

It is an arithmetic number, because the mean of its divisors is an integer number (560656155061).

Almost surely, 2^{1121312310121} is an apocalyptic number.

It is an amenable number.

1121312310121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121312310121 is an equidigital number, since it uses as much as digits as its factorization.

1121312310121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1121312310121 its reverse (1210132131211), we get a palindrome (2331444441332).

The spelling of 1121312310121 in words is "one trillion, one hundred twenty-one billion, three hundred twelve million, three hundred ten thousand, one hundred twenty-one".