1121121231023 has 2 divisors, whose sum is σ = 1121121231024. Its totient is φ = 1121121231022.

The previous prime is 1121121230987. The next prime is 1121121231037. The reversal of 1121121231023 is 3201321211211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121121231023 - 2⁶ = 1121121230959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121121230986 and 1121121231004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121121231623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560560615511 + 560560615512.

It is an arithmetic number, because the mean of its divisors is an integer number (560560615512).

Almost surely, 2^{1121121231023} is an apocalyptic number.

1121121231023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121121231023 is an equidigital number, since it uses as much as digits as its factorization.

1121121231023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1121121231023 its reverse (3201321211211), we get a palindrome (4322442442234).

The spelling of 1121121231023 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred thirty-one thousand, twenty-three".