221032313020 has 48 divisors (see below), whose sum is σ = 470663625600. Its totient is φ = 87178590720.

The previous prime is 221032312997. The next prime is 221032313057. The reversal of 221032313020 is 20313230122.

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, 1110466 + ... + 1294294.

It is an arithmetic number, because the mean of its divisors is an integer number (9805492200).

Almost surely, 2^221032313020 is an apocalyptic number.

221032313020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221032313020 is an abundant number, since it is smaller than the sum of its proper divisors (249631312580).

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

221032313020 is a wasteful number, since it uses less digits than its factorization.

221032313020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184678 (or 184676 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 221032313020 its reverse (20313230122), we get a palindrome (241345543142).

The spelling of 221032313020 in words is "two hundred twenty-one billion, thirty-two million, three hundred thirteen thousand, twenty".