11011022099981 has 2 divisors, whose sum is σ = 11011022099982. Its totient is φ = 11011022099980.

The previous prime is 11011022099863. The next prime is 11011022100017. The reversal of 11011022099981 is 18999022011011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9003300302500 + 2007721797481 = 3000550^2 + 1416941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11011022099981 is a prime.

It is a super-2 number, since 2×11011022099981² (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 (11011022099281) 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, 5505511049990 + 5505511049991.

It is an arithmetic number, because the mean of its divisors is an integer number (5505511049991).

Almost surely, 2^{11011022099981} is an apocalyptic number.

It is an amenable number.

11011022099981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011022099981 is an equidigital number, since it uses as much as digits as its factorization.

11011022099981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 44.

The spelling of 11011022099981 in words is "eleven trillion, eleven billion, twenty-two million, ninety-nine thousand, nine hundred eighty-one".