32010121220 has 144 divisors (see below), whose sum is σ = 85538654208. Its totient is φ = 9949847040.

The previous prime is 32010121181. The next prime is 32010121243. The reversal of 32010121220 is 2212101023.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 32010121195 and 32010121204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4124864 + ... + 4132616.

It is an arithmetic number, because the mean of its divisors is an integer number (594018432).

Almost surely, 2^32010121220 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 32010121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42769327104).

32010121220 is an abundant number, since it is smaller than the sum of its proper divisors (53528532988).

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

32010121220 is a wasteful number, since it uses less digits than its factorization.

32010121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8170 (or 8161 counting only the distinct ones).

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

Adding to 32010121220 its reverse (2212101023), we get a palindrome (34222222243).

The spelling of 32010121220 in words is "thirty-two billion, ten million, one hundred twenty-one thousand, two hundred twenty".