203122300100 has 18 divisors (see below), whose sum is σ = 440775391434. Its totient is φ = 81248920000.

The previous prime is 203122300061. The next prime is 203122300123. The reversal of 203122300100 is 1003221302.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 22502400064 + 180619900036 = 150008^2 + 424994^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1015611401 + ... + 1015611600.

Almost surely, 2^203122300100 is an apocalyptic number.

203122300100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203122300100 is an abundant number, since it is smaller than the sum of its proper divisors (237653091334).

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

203122300100 is a wasteful number, since it uses less digits than its factorization.

203122300100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031223015 (or 2031223008 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 203122300100 its reverse (1003221302), we get a palindrome (204125521402).

The spelling of 203122300100 in words is "two hundred three billion, one hundred twenty-two million, three hundred thousand, one hundred".