22145021329 has 2 divisors, whose sum is σ = 22145021330. Its totient is φ = 22145021328.

The previous prime is 22145021309. The next prime is 22145021411. The reversal of 22145021329 is 92312054122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18122544400 + 4022476929 = 134620^2 + 63423^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22145021329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22145021329.

It is not a weakly prime, because it can be changed into another prime (22145021309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11072510664 + 11072510665.

It is an arithmetic number, because the mean of its divisors is an integer number (11072510665).

Almost surely, 2^22145021329 is an apocalyptic number.

It is an amenable number.

22145021329 is a deficient number, since it is larger than the sum of its proper divisors (1).

22145021329 is an equidigital number, since it uses as much as digits as its factorization.

22145021329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 22145021329 in words is "twenty-two billion, one hundred forty-five million, twenty-one thousand, three hundred twenty-nine".