32210020421 has 2 divisors, whose sum is σ = 32210020422. Its totient is φ = 32210020420.

The previous prime is 32210020231. The next prime is 32210020439. The reversal of 32210020421 is 12402001223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23785350625 + 8424669796 = 154225^2 + 91786^2 .

It is an emirp because it is prime and its reverse (12402001223) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32210020421 - 2¹⁰ = 32210019397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32210020421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32210020471) 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 as a sum of consecutive naturals, namely, 16105010210 + 16105010211.

It is an arithmetic number, because the mean of its divisors is an integer number (16105010211).

Almost surely, 2^32210020421 is an apocalyptic number.

It is an amenable number.

32210020421 is a deficient number, since it is larger than the sum of its proper divisors (1).

32210020421 is an equidigital number, since it uses as much as digits as its factorization.

32210020421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 32210020421 its reverse (12402001223), we get a palindrome (44612021644).

The spelling of 32210020421 in words is "thirty-two billion, two hundred ten million, twenty thousand, four hundred twenty-one".