203111412120 has 48 divisors (see below), whose sum is σ = 660112090560. Its totient is φ = 54163043136.

The previous prime is 203111412089. The next prime is 203111412139. The reversal of 203111412120 is 21214111302.

203111412120 is a `hidden beast` number, since 2 + 0 + 311 + 141 + 212 + 0 = 666.

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 = 203111412093 and 203111412102.

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 11 ways as a sum of consecutive naturals, for example, 282098824 + ... + 282099543.

It is an arithmetic number, because the mean of its divisors is an integer number (13752335220).

Almost surely, 2^203111412120 is an apocalyptic number.

203111412120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203111412120 is an abundant number, since it is smaller than the sum of its proper divisors (457000678440).

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

203111412120 is a wasteful number, since it uses less digits than its factorization.

203111412120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564198384 (or 564198377 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 203111412120 its reverse (21214111302), we get a palindrome (224325523422).

The spelling of 203111412120 in words is "two hundred three billion, one hundred eleven million, four hundred twelve thousand, one hundred twenty".