32012121220 has 12 divisors (see below), whose sum is σ = 67225454604. Its totient is φ = 12804848480.

The previous prime is 32012121217. The next prime is 32012121227. The reversal of 32012121220 is 2212121023.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25380950596 + 6631170624 = 159314^2 + 81432^2 .

It is a junction number, because it is equal to n+sod(n) for n = 32012121194 and 32012121203.

It is not an unprimeable number, because it can be changed into a prime (32012121227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800303011 + ... + 800303050.

It is an arithmetic number, because the mean of its divisors is an integer number (5602121217).

Almost surely, 2^32012121220 is an apocalyptic number.

It is an amenable number.

32012121220 is an abundant number, since it is smaller than the sum of its proper divisors (35213333384).

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

32012121220 is a wasteful number, since it uses less digits than its factorization.

32012121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600606070 (or 1600606068 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 32012121220 its reverse (2212121023), we get a palindrome (34224242243).

The spelling of 32012121220 in words is "thirty-two billion, twelve million, one hundred twenty-one thousand, two hundred twenty".