203123121120 has 96 divisors (see below), whose sum is σ = 710930939040. Its totient is φ = 54166164480.

The previous prime is 203123121073. The next prime is 203123121139. The reversal of 203123121120 is 21121321302.

203123121120 is a `hidden beast` number, since 20 + 312 + 312 + 1 + 1 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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 = 203123121093 and 203123121102.

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, 23505301 + ... + 23513940.

It is an arithmetic number, because the mean of its divisors is an integer number (7405530615).

Almost surely, 2^203123121120 is an apocalyptic number.

203123121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203123121120 is an abundant number, since it is smaller than the sum of its proper divisors (507807817920).

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

203123121120 is a wasteful number, since it uses less digits than its factorization.

203123121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47019265 (or 47019251 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 203123121120 its reverse (21121321302), we get a palindrome (224244442422).

The spelling of 203123121120 in words is "two hundred three billion, one hundred twenty-three million, one hundred twenty-one thousand, one hundred twenty".