20220021329 has 2 divisors, whose sum is σ = 20220021330. Its totient is φ = 20220021328.

The previous prime is 20220021319. The next prime is 20220021377. The reversal of 20220021329 is 92312002202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14561972929 + 5658048400 = 120673^2 + 75220^2 .

It is a cyclic number.

It is not a de Polignac number, because 20220021329 - 2⁴ = 20220021313 is a prime.

It is not a weakly prime, because it can be changed into another prime (20220021319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110010664 + 10110010665.

It is an arithmetic number, because the mean of its divisors is an integer number (10110010665).

Almost surely, 2^20220021329 is an apocalyptic number.

It is an amenable number.

20220021329 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220021329 is an equidigital number, since it uses as much as digits as its factorization.

20220021329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The spelling of 20220021329 in words is "twenty billion, two hundred twenty million, twenty-one thousand, three hundred twenty-nine".