203023311121 has 16 divisors (see below), whose sum is σ = 215275976640. Its totient is φ = 190805345280.

The previous prime is 203023311079. The next prime is 203023311133. The reversal of 203023311121 is 121113320302.

It is not a de Polignac number, because 203023311121 - 2¹⁹ = 203022786833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203023311181) 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, 50413510 + ... + 50417536.

It is an arithmetic number, because the mean of its divisors is an integer number (13454748540).

Almost surely, 2^203023311121 is an apocalyptic number.

It is an amenable number.

203023311121 is a deficient number, since it is larger than the sum of its proper divisors (12252665519).

203023311121 is a wasteful number, since it uses less digits than its factorization.

203023311121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7584.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 203023311121 its reverse (121113320302), we get a palindrome (324136631423).

The spelling of 203023311121 in words is "two hundred three billion, twenty-three million, three hundred eleven thousand, one hundred twenty-one".