32304402221 has 48 divisors (see below), whose sum is σ = 43062681600. Its totient is φ = 23658972480.

The previous prime is 32304402217. The next prime is 32304402253. The reversal of 32304402221 is 12220440323.

It is not a de Polignac number, because 32304402221 - 2² = 32304402217 is a prime.

It is a super-2 number, since 2×32304402221² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32304402721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 824330 + ... + 862628.

It is an arithmetic number, because the mean of its divisors is an integer number (897139200).

Almost surely, 2^32304402221 is an apocalyptic number.

32304402221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

32304402221 is a deficient number, since it is larger than the sum of its proper divisors (10758279379).

32304402221 is a wasteful number, since it uses less digits than its factorization.

32304402221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38386 (or 38373 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 32304402221 its reverse (12220440323), we get a palindrome (44524842544).

The spelling of 32304402221 in words is "thirty-two billion, three hundred four million, four hundred two thousand, two hundred twenty-one".