32220131021 has 4 divisors (see below), whose sum is σ = 34698602652. Its totient is φ = 29741659392.

The previous prime is 32220130993. The next prime is 32220131023. The reversal of 32220131021 is 12013102223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12013102223 = 109 ⋅110211947.

It can be written as a sum of positive squares in 2 ways, for example, as 18840582121 + 13379548900 = 137261^2 + 115670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32220131021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32220131023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239235796 + ... + 1239235821.

It is an arithmetic number, because the mean of its divisors is an integer number (8674650663).

Almost surely, 2^32220131021 is an apocalyptic number.

It is an amenable number.

32220131021 is a deficient number, since it is larger than the sum of its proper divisors (2478471631).

32220131021 is a wasteful number, since it uses less digits than its factorization.

32220131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478471630.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 32220131021 its reverse (12013102223), we get a palindrome (44233233244).

The spelling of 32220131021 in words is "thirty-two billion, two hundred twenty million, one hundred thirty-one thousand, twenty-one".