22353533281 has 2 divisors, whose sum is σ = 22353533282. Its totient is φ = 22353533280.

The previous prime is 22353533219. The next prime is 22353533303. The reversal of 22353533281 is 18233535322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18931283281 + 3422250000 = 137591^2 + 58500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22353533281 is a prime.

It is a super-2 number, since 2×22353533281² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22353533281.

It is not a weakly prime, because it can be changed into another prime (22353533381) 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, 11176766640 + 11176766641.

It is an arithmetic number, because the mean of its divisors is an integer number (11176766641).

Almost surely, 2^22353533281 is an apocalyptic number.

It is an amenable number.

22353533281 is a deficient number, since it is larger than the sum of its proper divisors (1).

22353533281 is an equidigital number, since it uses as much as digits as its factorization.

22353533281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 37.

The spelling of 22353533281 in words is "twenty-two billion, three hundred fifty-three million, five hundred thirty-three thousand, two hundred eighty-one".