203021444130 has 64 divisors (see below), whose sum is σ = 538344361728. Its totient is φ = 48738990080.

The previous prime is 203021444117. The next prime is 203021444149. The reversal of 203021444130 is 31444120302.

It is a super-2 number, since 2×203021444130² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 203021444130.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8642211 + ... + 8665670.

It is an arithmetic number, because the mean of its divisors is an integer number (8411630652).

Almost surely, 2^203021444130 is an apocalyptic number.

203021444130 is an abundant number, since it is smaller than the sum of its proper divisors (335322917598).

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

203021444130 is a wasteful number, since it uses less digits than its factorization.

203021444130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17307931.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 203021444130 its reverse (31444120302), we get a palindrome (234465564432).

The spelling of 203021444130 in words is "two hundred three billion, twenty-one million, four hundred forty-four thousand, one hundred thirty".