1111007749081 has 2 divisors, whose sum is σ = 1111007749082. Its totient is φ = 1111007749080.

The previous prime is 1111007749021. The next prime is 1111007749123. The reversal of 1111007749081 is 1809477001111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 856698336400 + 254309412681 = 925580^2 + 504291^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111007749081 - 2¹¹ = 1111007747033 is a prime.

It is a super-2 number, since 2×1111007749081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1111007749021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555503874540 + 555503874541.

It is an arithmetic number, because the mean of its divisors is an integer number (555503874541).

Almost surely, 2^{1111007749081} is an apocalyptic number.

It is an amenable number.

1111007749081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111007749081 is an equidigital number, since it uses as much as digits as its factorization.

1111007749081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 40.

The spelling of 1111007749081 in words is "one trillion, one hundred eleven billion, seven million, seven hundred forty-nine thousand, eighty-one".