1121371111111 has 2 divisors, whose sum is σ = 1121371111112. Its totient is φ = 1121371111110.

The previous prime is 1121371111093. The next prime is 1121371111153. The reversal of 1121371111111 is 1111111731211.

It is a m-pointer prime, because the next prime (1121371111153) can be obtained adding 1121371111111 to its product of digits (42).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121371111111 - 2⁵ = 1121371111079 is a prime.

1121371111111 is a modest number, since divided by 1111111 gives 112137 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121371118111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560685555555 + 560685555556.

It is an arithmetic number, because the mean of its divisors is an integer number (560685555556).

Almost surely, 2^{1121371111111} is an apocalyptic number.

1121371111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121371111111 is an equidigital number, since it uses as much as digits as its factorization.

1121371111111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42, while the sum is 22.

Adding to 1121371111111 its reverse (1111111731211), we get a palindrome (2232482842322).

The spelling of 1121371111111 in words is "one trillion, one hundred twenty-one billion, three hundred seventy-one million, one hundred eleven thousand, one hundred eleven".