32222509981 has 2 divisors, whose sum is σ = 32222509982. Its totient is φ = 32222509980.

The previous prime is 32222509961. The next prime is 32222510069. The reversal of 32222509981 is 18990522223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32136298756 + 86211225 = 179266^2 + 9285^2 .

It is an emirp because it is prime and its reverse (18990522223) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32222509981 - 2⁷ = 32222509853 is a prime.

It is a super-2 number, since 2×32222509981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32222509931) 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, 16111254990 + 16111254991.

It is an arithmetic number, because the mean of its divisors is an integer number (16111254991).

Almost surely, 2^32222509981 is an apocalyptic number.

It is an amenable number.

32222509981 is a deficient number, since it is larger than the sum of its proper divisors (1).

32222509981 is an equidigital number, since it uses as much as digits as its factorization.

32222509981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 32222509981 in words is "thirty-two billion, two hundred twenty-two million, five hundred nine thousand, nine hundred eighty-one".