11122120201081 has 2 divisors, whose sum is σ = 11122120201082. Its totient is φ = 11122120201080.

The previous prime is 11122120201043. The next prime is 11122120201117. The reversal of 11122120201081 is 18010202122111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8187953331600 + 2934166869481 = 2861460^2 + 1712941^2 .

It is an emirp because it is prime and its reverse (18010202122111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11122120201081 is a prime.

It is a super-2 number, since 2×11122120201081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11122120261081) 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, 5561060100540 + 5561060100541.

It is an arithmetic number, because the mean of its divisors is an integer number (5561060100541).

Almost surely, 2^{11122120201081} is an apocalyptic number.

It is an amenable number.

11122120201081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122120201081 is an equidigital number, since it uses as much as digits as its factorization.

11122120201081 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 11122120201081 its reverse (18010202122111), we get a palindrome (29132322323192).

The spelling of 11122120201081 in words is "eleven trillion, one hundred twenty-two billion, one hundred twenty million, two hundred one thousand, eighty-one".