1121113221031 has 4 divisors (see below), whose sum is σ = 1124439966832. Its totient is φ = 1117786475232.

The previous prime is 1121113221029. The next prime is 1121113221073. The reversal of 1121113221031 is 1301223111211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121113221031 - 2¹ = 1121113221029 is a prime.

It is a super-2 number, since 2×1121113221031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121113221091) 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 in 3 ways as a sum of consecutive naturals, for example, 1663372395 + ... + 1663373068.

It is an arithmetic number, because the mean of its divisors is an integer number (281109991708).

Almost surely, 2^{1121113221031} is an apocalyptic number.

1121113221031 is a deficient number, since it is larger than the sum of its proper divisors (3326745801).

1121113221031 is an equidigital number, since it uses as much as digits as its factorization.

1121113221031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326745800.

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

Adding to 1121113221031 its reverse (1301223111211), we get a palindrome (2422336332242).

The spelling of 1121113221031 in words is "one trillion, one hundred twenty-one billion, one hundred thirteen million, two hundred twenty-one thousand, thirty-one".