32102020021 has 2 divisors, whose sum is σ = 32102020022. Its totient is φ = 32102020020.

The previous prime is 32102020001. The next prime is 32102020033. The reversal of 32102020021 is 12002020123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26912402500 + 5189617521 = 164050^2 + 72039^2 .

It is an emirp because it is prime and its reverse (12002020123) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32102020021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32102019983 and 32102020010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32102020001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16051010010 + 16051010011.

It is an arithmetic number, because the mean of its divisors is an integer number (16051010011).

Almost surely, 2^32102020021 is an apocalyptic number.

It is an amenable number.

32102020021 is a deficient number, since it is larger than the sum of its proper divisors (1).

32102020021 is an equidigital number, since it uses as much as digits as its factorization.

32102020021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 32102020021 its reverse (12002020123), we get a palindrome (44104040144).

The spelling of 32102020021 in words is "thirty-two billion, one hundred two million, twenty thousand, twenty-one".