20220020357 has 2 divisors, whose sum is σ = 20220020358. Its totient is φ = 20220020356.

The previous prime is 20220020347. The next prime is 20220020459. The reversal of 20220020357 is 75302002202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19570331236 + 649689121 = 139894^2 + 25489^2 .

It is a cyclic number.

It is not a de Polignac number, because 20220020357 - 2¹⁸ = 20219758213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20220020347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110010178 + 10110010179.

It is an arithmetic number, because the mean of its divisors is an integer number (10110010179).

Almost surely, 2^20220020357 is an apocalyptic number.

It is an amenable number.

20220020357 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220020357 is an equidigital number, since it uses as much as digits as its factorization.

20220020357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 23.

Adding to 20220020357 its reverse (75302002202), we get a palindrome (95522022559).

The spelling of 20220020357 in words is "twenty billion, two hundred twenty million, twenty thousand, three hundred fifty-seven".