32121225440 has 96 divisors (see below), whose sum is σ = 76524588000. Its totient is φ = 12740917248.

The previous prime is 32121225403. The next prime is 32121225457. The reversal of 32121225440 is 4452212123.

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, 9854531 + ... + 9857789.

It is an arithmetic number, because the mean of its divisors is an integer number (797131125).

Almost surely, 2^32121225440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32121225440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38262294000).

32121225440 is an abundant number, since it is smaller than the sum of its proper divisors (44403362560).

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

32121225440 is a wasteful number, since it uses less digits than its factorization.

32121225440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3772 (or 3764 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 32121225440 its reverse (4452212123), we get a palindrome (36573437563).

The spelling of 32121225440 in words is "thirty-two billion, one hundred twenty-one million, two hundred twenty-five thousand, four hundred forty".