11120000981 has 2 divisors, whose sum is σ = 11120000982. Its totient is φ = 11120000980.

The previous prime is 11120000963. The next prime is 11120000993. The reversal of 11120000981 is 18900002111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10554274756 + 565726225 = 102734^2 + 23785^2 .

It is an emirp because it is prime and its reverse (18900002111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11120000981 is a prime.

It is a super-2 number, since 2×11120000981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11120000581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560000490 + 5560000491.

It is an arithmetic number, because the mean of its divisors is an integer number (5560000491).

Almost surely, 2^11120000981 is an apocalyptic number.

It is an amenable number.

11120000981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11120000981 is an equidigital number, since it uses as much as digits as its factorization.

11120000981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 11120000981 in words is "eleven billion, one hundred twenty million, nine hundred eighty-one", and thus it is an aban number.