32000221300021 has 4 divisors (see below), whose sum is σ = 34461776784652. Its totient is φ = 29538665815392.

The previous prime is 32000221299971. The next prime is 32000221300049. The reversal of 32000221300021 is 12000312200023.

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 21801708792900 + 10198512507121 = 4669230^2 + 3193511^2 .

It is a cyclic number.

It is not a de Polignac number, because 32000221300021 - 2¹¹ = 32000221297973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32000221299968 and 32000221300004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32000221300321) 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, 1230777742296 + ... + 1230777742321.

It is an arithmetic number, because the mean of its divisors is an integer number (8615444196163).

Almost surely, 2^{32000221300021} is an apocalyptic number.

It is an amenable number.

32000221300021 is a deficient number, since it is larger than the sum of its proper divisors (2461555484631).

32000221300021 is a wasteful number, since it uses less digits than its factorization.

32000221300021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461555484630.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 32000221300021 its reverse (12000312200023), we get a palindrome (44000533500044).

The spelling of 32000221300021 in words is "thirty-two trillion, two hundred twenty-one million, three hundred thousand, twenty-one".