32121103220 has 96 divisors (see below), whose sum is σ = 77606968320. Its totient is φ = 11086571520.

The previous prime is 32121103199. The next prime is 32121103247. The reversal of 32121103220 is 2230112123.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 120062 + ... + 280458.

It is an arithmetic number, because the mean of its divisors is an integer number (808405920).

Almost surely, 2^32121103220 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 32121103220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38803484160).

32121103220 is an abundant number, since it is smaller than the sum of its proper divisors (45485865100).

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

32121103220 is a wasteful number, since it uses less digits than its factorization.

32121103220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160473 (or 160471 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 32121103220 its reverse (2230112123), we get a palindrome (34351215343).

The spelling of 32121103220 in words is "thirty-two billion, one hundred twenty-one million, one hundred three thousand, two hundred twenty".