203012212120 has 32 divisors (see below), whose sum is σ = 458391557520. Its totient is φ = 80917937280.

The previous prime is 203012212033. The next prime is 203012212121. The reversal of 203012212120 is 21212210302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 203012212094 and 203012212103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203012212121) 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 7 ways as a sum of consecutive naturals, for example, 8955651 + ... + 8978290.

Almost surely, 2^203012212120 is an apocalyptic number.

203012212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203012212120 is an abundant number, since it is smaller than the sum of its proper divisors (255379345400).

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

203012212120 is a wasteful number, since it uses less digits than its factorization.

203012212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17934235 (or 17934231 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 203012212120 its reverse (21212210302), we get a palindrome (224224422422).

The spelling of 203012212120 in words is "two hundred three billion, twelve million, two hundred twelve thousand, one hundred twenty".