32144020021 has 4 divisors (see below), whose sum is σ = 32151415500. Its totient is φ = 32136624544.

The previous prime is 32144020003. The next prime is 32144020037. The reversal of 32144020021 is 12002044123.

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 10251562500 + 21892457521 = 101250^2 + 147961^2 .

It is a cyclic number.

It is not a de Polignac number, because 32144020021 - 2⁷ = 32144019893 is a prime.

It is a super-2 number, since 2×32144020021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32144090021) 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, 3691216 + ... + 3699913.

It is an arithmetic number, because the mean of its divisors is an integer number (8037853875).

Almost surely, 2^32144020021 is an apocalyptic number.

It is an amenable number.

32144020021 is a deficient number, since it is larger than the sum of its proper divisors (7395479).

32144020021 is an equidigital number, since it uses as much as digits as its factorization.

32144020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7395478.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 32144020021 its reverse (12002044123), we get a palindrome (44146064144).

The spelling of 32144020021 in words is "thirty-two billion, one hundred forty-four million, twenty thousand, twenty-one".