32221200000 has 384 divisors, whose sum is σ = 116750652480. Its totient is φ = 7808000000.

The previous prime is 32221199993. The next prime is 32221200001. The reversal of 32221200000 is 212223.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (32221200001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13198780 + ... + 13201220.

Almost surely, 2^32221200000 is an apocalyptic number.

32221200000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32221200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58375326240).

32221200000 is an abundant number, since it is smaller than the sum of its proper divisors (84529452480).

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

32221200000 is an equidigital number, since it uses as much as digits as its factorization.

32221200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494 (or 2462 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 32221200000 its reverse (212223), we get a palindrome (32221412223).

It can be divided in two parts, 32221 and 200000, that added together give a triangular number (232221 = T₆₈₁).

The spelling of 32221200000 in words is "thirty-two billion, two hundred twenty-one million, two hundred thousand".