11121109999999 has 2 divisors, whose sum is σ = 11121110000000. Its totient is φ = 11121109999998.

The previous prime is 11121109999981. The next prime is 11121110000051. The reversal of 11121109999999 is 99999990112111.

It is a weak prime.

It is an emirp because it is prime and its reverse (99999990112111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11121109999999 - 2⁹ = 11121109999487 is a prime.

11121109999999 is a modest number, since divided by 9999999 gives 1112110 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11121109999919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560554999999 + 5560555000000.

It is an arithmetic number, because the mean of its divisors is an integer number (5560555000000).

Almost surely, 2^{11121109999999} is an apocalyptic number.

11121109999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121109999999 is an equidigital number, since it uses as much as digits as its factorization.

11121109999999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9565938, while the sum is 70.

The spelling of 11121109999999 in words is "eleven trillion, one hundred twenty-one billion, one hundred nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".