20303321132123 has 4 divisors (see below), whose sum is σ = 21186074224848. Its totient is φ = 19420568039400.

The previous prime is 20303321132089. The next prime is 20303321132161. The reversal of 20303321132123 is 32123112330302.

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 20303321132123 - 2¹⁰ = 20303321131099 is a prime.

It is a super-2 number, since 2×20303321132123² (a number of 27 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 = 20303321132092 and 20303321132101.

It is not an unprimeable number, because it can be changed into a prime (20303321132173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441376546328 + ... + 441376546373.

It is an arithmetic number, because the mean of its divisors is an integer number (5296518556212).

Almost surely, 2^{20303321132123} is an apocalyptic number.

20303321132123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20303321132123 is a deficient number, since it is larger than the sum of its proper divisors (882753092725).

20303321132123 is an equidigital number, since it uses as much as digits as its factorization.

20303321132123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882753092724.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 20303321132123 its reverse (32123112330302), we get a palindrome (52426433462425).

The spelling of 20303321132123 in words is "twenty trillion, three hundred three billion, three hundred twenty-one million, one hundred thirty-two thousand, one hundred twenty-three".