1121311221031 has 2 divisors, whose sum is σ = 1121311221032. Its totient is φ = 1121311221030.

The previous prime is 1121311220999. The next prime is 1121311221053. The reversal of 1121311221031 is 1301221131211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121311221031 - 2⁵ = 1121311220999 is a prime.

It is a super-2 number, since 2×1121311221031² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121311221071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560655610515 + 560655610516.

It is an arithmetic number, because the mean of its divisors is an integer number (560655610516).

Almost surely, 2^{1121311221031} is an apocalyptic number.

1121311221031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121311221031 is an equidigital number, since it uses as much as digits as its factorization.

1121311221031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1121311221031 its reverse (1301221131211), we get a palindrome (2422532352242).

The spelling of 1121311221031 in words is "one trillion, one hundred twenty-one billion, three hundred eleven million, two hundred twenty-one thousand, thirty-one".