32020013821 has 2 divisors, whose sum is σ = 32020013822. Its totient is φ = 32020013820.

The previous prime is 32020013819. The next prime is 32020013833. The reversal of 32020013821 is 12831002023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29828744100 + 2191269721 = 172710^2 + 46811^2 .

It is a cyclic number.

It is not a de Polignac number, because 32020013821 - 2¹ = 32020013819 is a prime.

It is a super-3 number, since 3×32020013821³ (a number of 32 digits) contains 333 as substring.

Together with 32020013819, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 32020013792 and 32020013801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32020713821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16010006910 + 16010006911.

It is an arithmetic number, because the mean of its divisors is an integer number (16010006911).

Almost surely, 2^32020013821 is an apocalyptic number.

It is an amenable number.

32020013821 is a deficient number, since it is larger than the sum of its proper divisors (1).

32020013821 is an equidigital number, since it uses as much as digits as its factorization.

32020013821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 32020013821 its reverse (12831002023), we get a palindrome (44851015844).

The spelling of 32020013821 in words is "thirty-two billion, twenty million, thirteen thousand, eight hundred twenty-one".