203121122223044 has 12 divisors (see below), whose sum is σ = 355462065713664. Its totient is φ = 101560532019144.

The previous prime is 203121122223043. The next prime is 203121122223067. The reversal of 203121122223044 is 440322221121302.

It is a junction number, because it is equal to n+sod(n) for n = 203121122222998 and 203121122223016.

It is not an unprimeable number, because it can be changed into a prime (203121122223043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18907397 + ... + 27635699.

It is an arithmetic number, because the mean of its divisors is an integer number (29621838809472).

Almost surely, 2^{203121122223044} is an apocalyptic number.

It is an amenable number.

203121122223044 is a deficient number, since it is larger than the sum of its proper divisors (152340943490620).

203121122223044 is a wasteful number, since it uses less digits than its factorization.

203121122223044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14546194 (or 14546192 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 203121122223044 its reverse (440322221121302), we get a palindrome (643443343344346).

The spelling of 203121122223044 in words is "two hundred three trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-three thousand, forty-four".