32001221020 has 24 divisors (see below), whose sum is σ = 69519895200. Its totient is φ = 12359092032.

The previous prime is 32001220961. The next prime is 32001221023. The reversal of 32001221020 is 2012210023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32001221023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27586680 + ... + 27587839.

It is an arithmetic number, because the mean of its divisors is an integer number (2896662300).

Almost surely, 2^32001221020 is an apocalyptic number.

It is an amenable number.

32001221020 is an abundant number, since it is smaller than the sum of its proper divisors (37518674180).

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

32001221020 is a wasteful number, since it uses less digits than its factorization.

32001221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55174557 (or 55174555 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 32001221020 its reverse (2012210023), we get a palindrome (34013431043).

The spelling of 32001221020 in words is "thirty-two billion, one million, two hundred twenty-one thousand, twenty".