203122401201243 has 6 divisors (see below), whose sum is σ = 293399023957364. Its totient is φ = 135414934134156.

The previous prime is 203122401201241. The next prime is 203122401201253. The reversal of 203122401201243 is 342102104221302.

203122401201243 is a `hidden beast` number, since 2 + 0 + 3 + 12 + 2 + 401 + 2 + 0 + 1 + 243 = 666.

It is not a de Polignac number, because 203122401201243 - 2¹ = 203122401201241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203122401201241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11284577844505 + ... + 11284577844522.

Almost surely, 2^{203122401201243} is an apocalyptic number.

203122401201243 is a deficient number, since it is larger than the sum of its proper divisors (90276622756121).

203122401201243 is a wasteful number, since it uses less digits than its factorization.

203122401201243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22569155689033 (or 22569155689030 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 203122401201243 its reverse (342102104221302), we get a palindrome (545224505422545).

The spelling of 203122401201243 in words is "two hundred three trillion, one hundred twenty-two billion, four hundred one million, two hundred one thousand, two hundred forty-three".