1121023112131 has 4 divisors (see below), whose sum is σ = 1207255659232. Its totient is φ = 1034790565032.

The previous prime is 1121023112123. The next prime is 1121023112141. The reversal of 1121023112131 is 1312113201211.

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 1121023112131 - 2³ = 1121023112123 is a prime.

It is a super-2 number, since 2×1121023112131² (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 = 1121023112099 and 1121023112108.

It is not an unprimeable number, because it can be changed into a prime (1121023112101) 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 3 ways as a sum of consecutive naturals, for example, 43116273531 + ... + 43116273556.

It is an arithmetic number, because the mean of its divisors is an integer number (301813914808).

Almost surely, 2^{1121023112131} is an apocalyptic number.

1121023112131 is a deficient number, since it is larger than the sum of its proper divisors (86232547101).

1121023112131 is an equidigital number, since it uses as much as digits as its factorization.

1121023112131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86232547100.

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

Adding to 1121023112131 its reverse (1312113201211), we get a palindrome (2433136313342).

The spelling of 1121023112131 in words is "one trillion, one hundred twenty-one billion, twenty-three million, one hundred twelve thousand, one hundred thirty-one".