11011100099981 has 2 divisors, whose sum is σ = 11011100099982. Its totient is φ = 11011100099980.

The previous prime is 11011100099959. The next prime is 11011100100019. The reversal of 11011100099981 is 18999000111011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10432473644356 + 578626455625 = 3229934^2 + 760675^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011100099981 - 2¹⁴ = 11011100083597 is a prime.

It is a super-2 number, since 2×11011100099981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011100099941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505550049990 + 5505550049991.

It is an arithmetic number, because the mean of its divisors is an integer number (5505550049991).

Almost surely, 2^{11011100099981} is an apocalyptic number.

It is an amenable number.

11011100099981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011100099981 is an equidigital number, since it uses as much as digits as its factorization.

11011100099981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 41.

The spelling of 11011100099981 in words is "eleven trillion, eleven billion, one hundred million, ninety-nine thousand, nine hundred eighty-one".