111001047121 has 2 divisors, whose sum is σ = 111001047122. Its totient is φ = 111001047120.

The previous prime is 111001047083. The next prime is 111001047151. The reversal of 111001047121 is 121740100111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59953971025 + 51047076096 = 244855^2 + 225936^2 .

It is a cyclic number.

It is not a de Polignac number, because 111001047121 - 2¹⁷ = 111000916049 is a prime.

It is not a weakly prime, because it can be changed into another prime (111001047151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500523560 + 55500523561.

It is an arithmetic number, because the mean of its divisors is an integer number (55500523561).

Almost surely, 2^111001047121 is an apocalyptic number.

It is an amenable number.

111001047121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111001047121 is an equidigital number, since it uses as much as digits as its factorization.

111001047121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 111001047121 its reverse (121740100111), we get a palindrome (232741147232).

The spelling of 111001047121 in words is "one hundred eleven billion, one million, forty-seven thousand, one hundred twenty-one".