1121340377581 has 2 divisors, whose sum is σ = 1121340377582. Its totient is φ = 1121340377580.

The previous prime is 1121340377569. The next prime is 1121340377593. The reversal of 1121340377581 is 1857730431211.

It is a balanced prime because it is at equal distance from previous prime (1121340377569) and next prime (1121340377593).

It can be written as a sum of positive squares in only one way, i.e., 1120773699556 + 566678025 = 1058666^2 + 23805^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121340377581 - 2²¹ = 1121338280429 is a prime.

It is a super-2 number, since 2×1121340377581² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121340377981) 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, 560670188790 + 560670188791.

It is an arithmetic number, because the mean of its divisors is an integer number (560670188791).

Almost surely, 2^{1121340377581} is an apocalyptic number.

It is an amenable number.

1121340377581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121340377581 is an equidigital number, since it uses as much as digits as its factorization.

1121340377581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 1121340377581 in words is "one trillion, one hundred twenty-one billion, three hundred forty million, three hundred seventy-seven thousand, five hundred eighty-one".