20203112122303 has 4 divisors (see below), whose sum is σ = 22039758678888. Its totient is φ = 18366465565720.

The previous prime is 20203112122301. The next prime is 20203112122327. The reversal of 20203112122303 is 30322121130202.

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 20203112122303 - 2¹ = 20203112122301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203112122301) 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, 918323278276 + ... + 918323278297.

It is an arithmetic number, because the mean of its divisors is an integer number (5509939669722).

Almost surely, 2^{20203112122303} is an apocalyptic number.

20203112122303 is a deficient number, since it is larger than the sum of its proper divisors (1836646556585).

20203112122303 is a wasteful number, since it uses less digits than its factorization.

20203112122303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836646556584.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20203112122303 its reverse (30322121130202), we get a palindrome (50525233252505).

The spelling of 20203112122303 in words is "twenty trillion, two hundred three billion, one hundred twelve million, one hundred twenty-two thousand, three hundred three".