322229999981 has 2 divisors, whose sum is σ = 322229999982. Its totient is φ = 322229999980.

The previous prime is 322229999953. The next prime is 322230000041. The reversal of 322229999981 is 189999922223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168154124356 + 154075875625 = 410066^2 + 392525^2 .

It is an emirp because it is prime and its reverse (189999922223) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-322229999981 is a prime.

It is a super-2 number, since 2×322229999981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322229999921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161114999990 + 161114999991.

It is an arithmetic number, because the mean of its divisors is an integer number (161114999991).

Almost surely, 2^322229999981 is an apocalyptic number.

It is an amenable number.

322229999981 is a deficient number, since it is larger than the sum of its proper divisors (1).

322229999981 is an equidigital number, since it uses as much as digits as its factorization.

322229999981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22674816, while the sum is 65.

The spelling of 322229999981 in words is "three hundred twenty-two billion, two hundred twenty-nine million, nine hundred ninety-nine thousand, nine hundred eighty-one".