221161500032 has 48 divisors (see below), whose sum is σ = 484290599100. Its totient is φ = 100527947520.

The previous prime is 221161500019. The next prime is 221161500041. The reversal of 221161500032 is 230005161122.

It is a junction number, because it is equal to n+sod(n) for n = 221161499980 and 221161500007.

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 in 5 ways as a sum of consecutive naturals, for example, 7124282 + ... + 7155257.

Almost surely, 2^221161500032 is an apocalyptic number.

221161500032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221161500032 is an abundant number, since it is smaller than the sum of its proper divisors (263129099068).

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

221161500032 is a wasteful number, since it uses less digits than its factorization.

221161500032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14279575 (or 14279552 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 221161500032 its reverse (230005161122), we get a palindrome (451166661154).

The spelling of 221161500032 in words is "two hundred twenty-one billion, one hundred sixty-one million, five hundred thousand, thirty-two".