32212221140 has 96 divisors (see below), whose sum is σ = 78839308800. Its totient is φ = 10931310720.

The previous prime is 32212221113. The next prime is 32212221157. The reversal of 32212221140 is 4112221223.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222551 + ... + 337569.

It is an arithmetic number, because the mean of its divisors is an integer number (821242800).

Almost surely, 2^32212221140 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 32212221140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39419654400).

32212221140 is an abundant number, since it is smaller than the sum of its proper divisors (46627087660).

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

32212221140 is a wasteful number, since it uses less digits than its factorization.

32212221140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115125 (or 115123 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 32212221140 its reverse (4112221223), we get a palindrome (36324442363).

It can be divided in two parts, 32212 and 221140, that added together give a palindrome (253352).

The spelling of 32212221140 in words is "thirty-two billion, two hundred twelve million, two hundred twenty-one thousand, one hundred forty".