203102111120 has 20 divisors (see below), whose sum is σ = 472212408540. Its totient is φ = 81240844416.

The previous prime is 203102111083. The next prime is 203102111123. The reversal of 203102111120 is 21111201302.

It can be written as a sum of positive squares in 2 ways, for example, as 161321115904 + 41780995216 = 401648^2 + 204404^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 203102111095 and 203102111104.

It is not an unprimeable number, because it can be changed into a prime (203102111123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1269388115 + ... + 1269388274.

It is an arithmetic number, because the mean of its divisors is an integer number (23610620427).

Almost surely, 2^203102111120 is an apocalyptic number.

203102111120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203102111120 is an abundant number, since it is smaller than the sum of its proper divisors (269110297420).

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

203102111120 is a wasteful number, since it uses less digits than its factorization.

203102111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538776402 (or 2538776396 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 203102111120 its reverse (21111201302), we get a palindrome (224213312422).

The spelling of 203102111120 in words is "two hundred three billion, one hundred two million, one hundred eleven thousand, one hundred twenty".