203121112030032 has 80 divisors (see below), whose sum is σ = 599935976497152. Its totient is φ = 58010886568320.

The previous prime is 203121112029973. The next prime is 203121112030063. The reversal of 203121112030032 is 230030211121302.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 203121112029990 and 203121112030008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122701944 + ... + 124346327.

Almost surely, 2^{203121112030032} is an apocalyptic number.

It is an amenable number.

203121112030032 is an abundant number, since it is smaller than the sum of its proper divisors (396814864467120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203121112030032 is a wasteful number, since it uses less digits than its factorization.

203121112030032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247050736 (or 247050730 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 203121112030032 its reverse (230030211121302), we get a palindrome (433151323151334).

The spelling of 203121112030032 in words is "two hundred three trillion, one hundred twenty-one billion, one hundred twelve million, thirty thousand, thirty-two".