203216155252 has 12 divisors (see below), whose sum is σ = 387958114656. Its totient is φ = 92370979640.

The previous prime is 203216155193. The next prime is 203216155297. The reversal of 203216155252 is 252551612302.

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 3 ways as a sum of consecutive naturals, for example, 2309274448 + ... + 2309274535.

It is an arithmetic number, because the mean of its divisors is an integer number (32329842888).

Almost surely, 2^203216155252 is an apocalyptic number.

203216155252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

203216155252 is a deficient number, since it is larger than the sum of its proper divisors (184741959404).

203216155252 is a wasteful number, since it uses less digits than its factorization.

203216155252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4618548998 (or 4618548996 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 203216155252 its reverse (252551612302), we get a palindrome (455767767554).

The spelling of 203216155252 in words is "two hundred three billion, two hundred sixteen million, one hundred fifty-five thousand, two hundred fifty-two".