1101113312281 has 2 divisors, whose sum is σ = 1101113312282. Its totient is φ = 1101113312280.

The previous prime is 1101113312263. The next prime is 1101113312309. The reversal of 1101113312281 is 1822133111011.

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., 1091797201881 + 9316110400 = 1044891^2 + 96520^2 .

It is an emirp because it is prime and its reverse (1822133111011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1101113312281 - 2²¹ = 1101111215129 is a prime.

It is a super-2 number, since 2×1101113312281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1101113312381) 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, 550556656140 + 550556656141.

It is an arithmetic number, because the mean of its divisors is an integer number (550556656141).

Almost surely, 2^{1101113312281} is an apocalyptic number.

It is an amenable number.

1101113312281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101113312281 is an equidigital number, since it uses as much as digits as its factorization.

1101113312281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

Adding to 1101113312281 its reverse (1822133111011), we get a palindrome (2923246423292).

The spelling of 1101113312281 in words is "one trillion, one hundred one billion, one hundred thirteen million, three hundred twelve thousand, two hundred eighty-one".