1000011109873 has 2 divisors, whose sum is σ = 1000011109874. Its totient is φ = 1000011109872.

The previous prime is 1000011109837. The next prime is 1000011109913. The reversal of 1000011109873 is 3789011100001.

Together with previous prime (1000011109837) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 597201292944 + 402809816929 = 772788^2 + 634673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000011109873 is a prime.

It is a super-2 number, since 2×1000011109873² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1000011109813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500005554936 + 500005554937.

It is an arithmetic number, because the mean of its divisors is an integer number (500005554937).

Almost surely, 2^{1000011109873} is an apocalyptic number.

It is an amenable number.

1000011109873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000011109873 is an equidigital number, since it uses as much as digits as its factorization.

1000011109873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 31.

Adding to 1000011109873 its reverse (3789011100001), we get a palindrome (4789022209874).

The spelling of 1000011109873 in words is "one trillion, eleven million, one hundred nine thousand, eight hundred seventy-three".