32011012220 has 144 divisors (see below), whose sum is σ = 77478266880. Its totient is φ = 11080037760.

The previous prime is 32011012219. The next prime is 32011012237. The reversal of 32011012220 is 2221011023.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 32011012195 and 32011012204.

It is a congruent number.

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, 12410891 + ... + 12413469.

It is an arithmetic number, because the mean of its divisors is an integer number (538043520).

Almost surely, 2^32011012220 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 32011012220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38739133440).

32011012220 is an abundant number, since it is smaller than the sum of its proper divisors (45467254660).

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

32011012220 is a wasteful number, since it uses less digits than its factorization.

32011012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856 (or 2843 counting only the distinct ones).

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

Adding to 32011012220 its reverse (2221011023), we get a palindrome (34232023243).

The spelling of 32011012220 in words is "thirty-two billion, eleven million, twelve thousand, two hundred twenty".