32021020121 has 4 divisors (see below), whose sum is σ = 32025177252. Its totient is φ = 32016862992.

The previous prime is 32021020111. The next prime is 32021020133. The reversal of 32021020121 is 12102012023.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7163083225 + 24857936896 = 84635^2 + 157664^2 .

It is a cyclic number.

It is not a de Polignac number, because 32021020121 - 2¹⁰ = 32021019097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32021020096 and 32021020105.

It is not an unprimeable number, because it can be changed into a prime (32021020111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2066990 + ... + 2082423.

It is an arithmetic number, because the mean of its divisors is an integer number (8006294313).

Almost surely, 2^32021020121 is an apocalyptic number.

It is an amenable number.

32021020121 is a deficient number, since it is larger than the sum of its proper divisors (4157131).

32021020121 is an equidigital number, since it uses as much as digits as its factorization.

32021020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4157130.

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

Adding to 32021020121 its reverse (12102012023), we get a palindrome (44123032144).

The spelling of 32021020121 in words is "thirty-two billion, twenty-one million, twenty thousand, one hundred twenty-one".