32121100220 has 48 divisors (see below), whose sum is σ = 73626876288. Its totient is φ = 11673994560.

The previous prime is 32121100189. The next prime is 32121100241. The reversal of 32121100220 is 2200112123.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 32121100195 and 32121100204.

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, 371639 + ... + 449841.

It is an arithmetic number, because the mean of its divisors is an integer number (1533893256).

Almost surely, 2^32121100220 is an apocalyptic number.

It is an amenable number.

32121100220 is an abundant number, since it is smaller than the sum of its proper divisors (41505776068).

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

32121100220 is a wasteful number, since it uses less digits than its factorization.

32121100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80090 (or 80088 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 32121100220 its reverse (2200112123), we get a palindrome (34321212343).

The spelling of 32121100220 in words is "thirty-two billion, one hundred twenty-one million, one hundred thousand, two hundred twenty".