203121013220041 has 12 divisors (see below), whose sum is σ = 238008325643028. Its totient is φ = 172832895497472.

The previous prime is 203121013220011. The next prime is 203121013220063. The reversal of 203121013220041 is 140022310121302.

It can be written as a sum of positive squares in 2 ways, for example, as 136984107568441 + 66136905651600 = 11704021^2 + 8132460^2 .

It is not a de Polignac number, because 203121013220041 - 2⁹ = 203121013219529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203121013219994 and 203121013220021.

It is not an unprimeable number, because it can be changed into a prime (203121013220011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15128923216 + ... + 15128936641.

It is an arithmetic number, because the mean of its divisors is an integer number (19834027136919).

Almost surely, 2^{203121013220041} is an apocalyptic number.

It is an amenable number.

203121013220041 is a deficient number, since it is larger than the sum of its proper divisors (34887312422987).

203121013220041 is a wasteful number, since it uses less digits than its factorization.

203121013220041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30257860008 (or 30257860001 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 203121013220041 its reverse (140022310121302), we get a palindrome (343143323341343).

The spelling of 203121013220041 in words is "two hundred three trillion, one hundred twenty-one billion, thirteen million, two hundred twenty thousand, forty-one".