11012120011111 has 2 divisors, whose sum is σ = 11012120011112. Its totient is φ = 11012120011110.

The previous prime is 11012120011051. The next prime is 11012120011129. The reversal of 11012120011111 is 11111002121011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11012120011111 - 2²¹ = 11012117913959 is a prime.

It is a super-2 number, since 2×11012120011111² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11012120011091 and 11012120011100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11012120012111) 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, 5506060005555 + 5506060005556.

It is an arithmetic number, because the mean of its divisors is an integer number (5506060005556).

Almost surely, 2^{11012120011111} is an apocalyptic number.

11012120011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012120011111 is an equidigital number, since it uses as much as digits as its factorization.

11012120011111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11012120011111 its reverse (11111002121011), we get a palindrome (22123122132122).

The spelling of 11012120011111 in words is "eleven trillion, twelve billion, one hundred twenty million, eleven thousand, one hundred eleven".