32222240021 has 2 divisors, whose sum is σ = 32222240022. Its totient is φ = 32222240020.

The previous prime is 32222239991. The next prime is 32222240033. The reversal of 32222240021 is 12004222223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31148367121 + 1073872900 = 176489^2 + 32770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32222240021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32222239975 and 32222240002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32222240221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16111120010 + 16111120011.

It is an arithmetic number, because the mean of its divisors is an integer number (16111120011).

Almost surely, 2^32222240021 is an apocalyptic number.

It is an amenable number.

32222240021 is a deficient number, since it is larger than the sum of its proper divisors (1).

32222240021 is an equidigital number, since it uses as much as digits as its factorization.

32222240021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 32222240021 its reverse (12004222223), we get a palindrome (44226462244).

The spelling of 32222240021 in words is "thirty-two billion, two hundred twenty-two million, two hundred forty thousand, twenty-one".