11121010012081 has 2 divisors, whose sum is σ = 11121010012082. Its totient is φ = 11121010012080.

The previous prime is 11121010012067. The next prime is 11121010012109. The reversal of 11121010012081 is 18021001012111.

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., 10561304033856 + 559705978225 = 3249816^2 + 748135^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121010012081 - 2¹⁹ = 11121009487793 is a prime.

It is a super-2 number, since 2×11121010012081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11121010012681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560505006040 + 5560505006041.

It is an arithmetic number, because the mean of its divisors is an integer number (5560505006041).

Almost surely, 2^{11121010012081} is an apocalyptic number.

It is an amenable number.

11121010012081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121010012081 is an equidigital number, since it uses as much as digits as its factorization.

11121010012081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 11121010012081 its reverse (18021001012111), we get a palindrome (29142011024192).

The spelling of 11121010012081 in words is "eleven trillion, one hundred twenty-one billion, ten million, twelve thousand, eighty-one".