203121110141013 has 16 divisors (see below), whose sum is σ = 273369096460800. Its totient is φ = 134143689786096.

The previous prime is 203121110141009. The next prime is 203121110141041. The reversal of 203121110141013 is 310141011121302.

It is a happy number.

It is not a de Polignac number, because 203121110141013 - 2² = 203121110141009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203121110141413) 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, 2457795 + ... + 20304752.

It is an arithmetic number, because the mean of its divisors is an integer number (17085568528800).

Almost surely, 2^{203121110141013} is an apocalyptic number.

It is an amenable number.

203121110141013 is a deficient number, since it is larger than the sum of its proper divisors (70247986319787).

203121110141013 is a wasteful number, since it uses less digits than its factorization.

203121110141013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22790456.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 203121110141013 its reverse (310141011121302), we get a palindrome (513262121262315).

The spelling of 203121110141013 in words is "two hundred three trillion, one hundred twenty-one billion, one hundred ten million, one hundred forty-one thousand, thirteen".