203022312120 has 96 divisors (see below), whose sum is σ = 659878876800. Its totient is φ = 54134658816.

The previous prime is 203022312079. The next prime is 203022312193. The reversal of 203022312120 is 21213220302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 203022312093 and 203022312102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7208626 + ... + 7236734.

It is an arithmetic number, because the mean of its divisors is an integer number (6873738300).

Almost surely, 2^203022312120 is an apocalyptic number.

203022312120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203022312120 is an abundant number, since it is smaller than the sum of its proper divisors (456856564680).

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

203022312120 is a wasteful number, since it uses less digits than its factorization.

203022312120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48189 (or 48182 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 203022312120 its reverse (21213220302), we get a palindrome (224235532422).

The spelling of 203022312120 in words is "two hundred three billion, twenty-two million, three hundred twelve thousand, one hundred twenty".