22012130321 has 2 divisors, whose sum is σ = 22012130322. Its totient is φ = 22012130320.

The previous prime is 22012130279. The next prime is 22012130509. The reversal of 22012130321 is 12303121022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18392784400 + 3619345921 = 135620^2 + 60161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22012130321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22012130321.

It is not a weakly prime, because it can be changed into another prime (22012138321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006065160 + 11006065161.

It is an arithmetic number, because the mean of its divisors is an integer number (11006065161).

Almost surely, 2^22012130321 is an apocalyptic number.

It is an amenable number.

22012130321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012130321 is an equidigital number, since it uses as much as digits as its factorization.

22012130321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22012130321 its reverse (12303121022), we get a palindrome (34315251343).

The spelling of 22012130321 in words is "twenty-two billion, twelve million, one hundred thirty thousand, three hundred twenty-one".