1123303203121 has 16 divisors (see below), whose sum is σ = 1239188888448. Its totient is φ = 1009731340800.

The previous prime is 1123303203109. The next prime is 1123303203163. The reversal of 1123303203121 is 1213023033211.

It is a cyclic number.

It is not a de Polignac number, because 1123303203121 - 2⁷ = 1123303202993 is a prime.

It is a super-2 number, since 2×1123303203121² (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 = 1123303203092 and 1123303203101.

It is not an unprimeable number, because it can be changed into a prime (1123303203521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684636 + ... + 1647826.

It is an arithmetic number, because the mean of its divisors is an integer number (77449305528).

Almost surely, 2^{1123303203121} is an apocalyptic number.

1123303203121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1123303203121 is a deficient number, since it is larger than the sum of its proper divisors (115885685327).

1123303203121 is a wasteful number, since it uses less digits than its factorization.

1123303203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964392.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1123303203121 its reverse (1213023033211), we get a palindrome (2336326236332).

The spelling of 1123303203121 in words is "one trillion, one hundred twenty-three billion, three hundred three million, two hundred three thousand, one hundred twenty-one".