1121311202113 has 2 divisors, whose sum is σ = 1121311202114. Its totient is φ = 1121311202112.

The previous prime is 1121311202093. The next prime is 1121311202147. The reversal of 1121311202113 is 3112021131211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 796990064049 + 324321138064 = 892743^2 + 569492^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121311202113 - 2²¹ = 1121309104961 is a prime.

It is a super-2 number, since 2×1121311202113² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121311202183) 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, 560655601056 + 560655601057.

It is an arithmetic number, because the mean of its divisors is an integer number (560655601057).

Almost surely, 2^{1121311202113} is an apocalyptic number.

It is an amenable number.

1121311202113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121311202113 is an equidigital number, since it uses as much as digits as its factorization.

1121311202113 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1121311202113 its reverse (3112021131211), we get a palindrome (4233332333324).

The spelling of 1121311202113 in words is "one trillion, one hundred twenty-one billion, three hundred eleven million, two hundred two thousand, one hundred thirteen".