1000000011121 has 2 divisors, whose sum is σ = 1000000011122. Its totient is φ = 1000000011120.

The previous prime is 1000000011113. The next prime is 1000000011151. The reversal of 1000000011121 is 1211100000001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 708357889600 + 291642121521 = 841640^2 + 540039^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000000011121 - 2³ = 1000000011113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000000011151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500000005560 + 500000005561.

It is an arithmetic number, because the mean of its divisors is an integer number (500000005561).

Almost surely, 2^{1000000011121} is an apocalyptic number.

It is an amenable number.

1000000011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000000011121 is an equidigital number, since it uses as much as digits as its factorization.

1000000011121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 1000000011121 its reverse (1211100000001), we get a palindrome (2211100011122).

The spelling of 1000000011121 in words is "one trillion, eleven thousand, one hundred twenty-one".