11111001121027 has 2 divisors, whose sum is σ = 11111001121028. Its totient is φ = 11111001121026.

The previous prime is 11111001120997. The next prime is 11111001121061. The reversal of 11111001121027 is 72012110011111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11111001121027 - 2³⁵ = 11076641382659 is a prime.

It is a super-2 number, since 2×11111001121027² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11111001120995 and 11111001121013.

It is not a weakly prime, because it can be changed into another prime (11111001121427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555500560513 + 5555500560514.

It is an arithmetic number, because the mean of its divisors is an integer number (5555500560514).

Almost surely, 2^{11111001121027} is an apocalyptic number.

11111001121027 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111001121027 is an equidigital number, since it uses as much as digits as its factorization.

11111001121027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 19.

Adding to 11111001121027 its reverse (72012110011111), we get a palindrome (83123111132138).

The spelling of 11111001121027 in words is "eleven trillion, one hundred eleven billion, one million, one hundred twenty-one thousand, twenty-seven".