1023113121121 has 32 divisors (see below), whose sum is σ = 1277704995840. Its totient is φ = 797693266944.

The previous prime is 1023113121119. The next prime is 1023113121187. The reversal of 1023113121121 is 1211213113201.

It is not a de Polignac number, because 1023113121121 - 2¹ = 1023113121119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1023113121721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1491400 + ... + 2066518.

It is an arithmetic number, because the mean of its divisors is an integer number (39928281120).

Almost surely, 2^{1023113121121} is an apocalyptic number.

It is an amenable number.

1023113121121 is a deficient number, since it is larger than the sum of its proper divisors (254591874719).

1023113121121 is a wasteful number, since it uses less digits than its factorization.

1023113121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575425.

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

Adding to 1023113121121 its reverse (1211213113201), we get a palindrome (2234326234322).

The spelling of 1023113121121 in words is "one trillion, twenty-three billion, one hundred thirteen million, one hundred twenty-one thousand, one hundred twenty-one".