203021121332 has 6 divisors (see below), whose sum is σ = 355286962338. Its totient is φ = 101510560664.

The previous prime is 203021121319. The next prime is 203021121341. The reversal of 203021121332 is 233121120302.

It can be written as a sum of positive squares in only one way, i.e., 118889798416 + 84131322916 = 344804^2 + 290054^2 .

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 as a sum of consecutive naturals, namely, 25377640163 + ... + 25377640170.

It is an arithmetic number, because the mean of its divisors is an integer number (59214493723).

Almost surely, 2^203021121332 is an apocalyptic number.

It is an amenable number.

203021121332 is a deficient number, since it is larger than the sum of its proper divisors (152265841006).

203021121332 is a wasteful number, since it uses less digits than its factorization.

203021121332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50755280337 (or 50755280335 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 203021121332 its reverse (233121120302), we get a palindrome (436142241634).

The spelling of 203021121332 in words is "two hundred three billion, twenty-one million, one hundred twenty-one thousand, three hundred thirty-two".