3200000221921 has 2 divisors, whose sum is σ = 3200000221922. Its totient is φ = 3200000221920.

The previous prime is 3200000221889. The next prime is 3200000221933. The reversal of 3200000221921 is 1291220000023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1844405731921 + 1355594490000 = 1358089^2 + 1164300^2 .

It is a cyclic number.

It is not a de Polignac number, because 3200000221921 - 2⁵ = 3200000221889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3200000221892 and 3200000221901.

It is not a weakly prime, because it can be changed into another prime (3200000221961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600000110960 + 1600000110961.

It is an arithmetic number, because the mean of its divisors is an integer number (1600000110961).

Almost surely, 2^{3200000221921} is an apocalyptic number.

It is an amenable number.

3200000221921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3200000221921 is an equidigital number, since it uses as much as digits as its factorization.

3200000221921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 3200000221921 its reverse (1291220000023), we get a palindrome (4491220221944).

The spelling of 3200000221921 in words is "three trillion, two hundred billion, two hundred twenty-one thousand, nine hundred twenty-one".