11102120012281 has 2 divisors, whose sum is σ = 11102120012282. Its totient is φ = 11102120012280.

The previous prime is 11102120012279. The next prime is 11102120012299. The reversal of 11102120012281 is 18221002120111.

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., 9403422250000 + 1698697762281 = 3066500^2 + 1303341^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102120012281 - 2¹ = 11102120012279 is a prime.

It is a super-2 number, since 2×11102120012281² (a number of 27 digits) contains 22 as substring.

Together with 11102120012279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11102120012381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551060006140 + 5551060006141.

It is an arithmetic number, because the mean of its divisors is an integer number (5551060006141).

Almost surely, 2^{11102120012281} is an apocalyptic number.

It is an amenable number.

11102120012281 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102120012281 is an equidigital number, since it uses as much as digits as its factorization.

11102120012281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 22.

Adding to 11102120012281 its reverse (18221002120111), we get a palindrome (29323122132392).

The spelling of 11102120012281 in words is "eleven trillion, one hundred two billion, one hundred twenty million, twelve thousand, two hundred eighty-one".