221039300500 has 48 divisors (see below), whose sum is σ = 482808113424. Its totient is φ = 88405046400.

The previous prime is 221039300497. The next prime is 221039300591. The reversal of 221039300500 is 5003930122.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 126312003216 + 94727297284 = 355404^2 + 307778^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5104942 + ... + 5148058.

It is an arithmetic number, because the mean of its divisors is an integer number (10058502363).

Almost surely, 2^221039300500 is an apocalyptic number.

221039300500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221039300500 is an abundant number, since it is smaller than the sum of its proper divisors (261768812924).

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

221039300500 is a wasteful number, since it uses less digits than its factorization.

221039300500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53389 (or 53377 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The spelling of 221039300500 in words is "two hundred twenty-one billion, thirty-nine million, three hundred thousand, five hundred".