1121003123131 has 4 divisors (see below), whose sum is σ = 1124329542232. Its totient is φ = 1117676704032.

The previous prime is 1121003123089. The next prime is 1121003123137. The reversal of 1121003123131 is 1313213001211.

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 1121003123131 - 2⁷ = 1121003123003 is a prime.

It is a super-2 number, since 2×1121003123131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121003123099 and 1121003123108.

It is not an unprimeable number, because it can be changed into a prime (1121003123137) 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, 1663209045 + ... + 1663209718.

It is an arithmetic number, because the mean of its divisors is an integer number (281082385558).

Almost surely, 2^{1121003123131} is an apocalyptic number.

1121003123131 is a deficient number, since it is larger than the sum of its proper divisors (3326419101).

1121003123131 is an equidigital number, since it uses as much as digits as its factorization.

1121003123131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326419100.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1121003123131 its reverse (1313213001211), we get a palindrome (2434216124342).

The spelling of 1121003123131 in words is "one trillion, one hundred twenty-one billion, three million, one hundred twenty-three thousand, one hundred thirty-one".