1121111051 has 2 divisors, whose sum is σ = 1121111052. Its totient is φ = 1121111050.

The previous prime is 1121111027. The next prime is 1121111071. The reversal of 1121111051 is 1501111211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121111051 - 2¹⁸ = 1120848907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121111071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560555525 + 560555526.

It is an arithmetic number, because the mean of its divisors is an integer number (560555526).

Almost surely, 2^1121111051 is an apocalyptic number.

1121111051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121111051 is an equidigital number, since it uses as much as digits as its factorization.

1121111051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10, while the sum is 14.

The square root of 1121111051 is about 33482.9964459575. The cubic root of 1121111051 is about 1038.8421072237.

Adding to 1121111051 its reverse (1501111211), we get a palindrome (2622222262).

The spelling of 1121111051 in words is "one billion, one hundred twenty-one million, one hundred eleven thousand, fifty-one".