1121131313123 has 16 divisors (see below), whose sum is σ = 1231504596480. Its totient is φ = 1015898868864.

The previous prime is 1121131313117. The next prime is 1121131313147. The reversal of 1121131313123 is 3213131311211.

It is a cyclic number.

It is not a de Polignac number, because 1121131313123 - 2¹⁴ = 1121131296739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121131312123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12796715 + ... + 12884027.

It is an arithmetic number, because the mean of its divisors is an integer number (76969037280).

Almost surely, 2^{1121131313123} is an apocalyptic number.

1121131313123 is a deficient number, since it is larger than the sum of its proper divisors (110373283357).

1121131313123 is a wasteful number, since it uses less digits than its factorization.

1121131313123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116738.

The product of its digits is 324, while the sum is 23.

Adding to 1121131313123 its reverse (3213131311211), we get a palindrome (4334262624334).

The spelling of 1121131313123 in words is "one trillion, one hundred twenty-one billion, one hundred thirty-one million, three hundred thirteen thousand, one hundred twenty-three".