11121311321999 has 16 divisors (see below), whose sum is σ = 12158359623936. Its totient is φ = 10126968883200.

The previous prime is 11121311321983. The next prime is 11121311322007. The reversal of 11121311321999 is 99912311312111.

It is a cyclic number.

It is not a de Polignac number, because 11121311321999 - 2⁴ = 11121311321983 is a prime.

It is a super-2 number, since 2×11121311321999² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121311321399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462782 + ... + 4738859.

It is an arithmetic number, because the mean of its divisors is an integer number (759897476496).

Almost surely, 2^{11121311321999} is an apocalyptic number.

11121311321999 is a deficient number, since it is larger than the sum of its proper divisors (1037048301937).

11121311321999 is a wasteful number, since it uses less digits than its factorization.

11121311321999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5205746.

The product of its digits is 26244, while the sum is 44.

The spelling of 11121311321999 in words is "eleven trillion, one hundred twenty-one billion, three hundred eleven million, three hundred twenty-one thousand, nine hundred ninety-nine".