20522204243 has 2 divisors, whose sum is σ = 20522204244. Its totient is φ = 20522204242.

The previous prime is 20522204239. The next prime is 20522204249. The reversal of 20522204243 is 34240222502.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20522204243 - 2² = 20522204239 is a prime.

It is not a weakly prime, because it can be changed into another prime (20522204249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261102121 + 10261102122.

It is an arithmetic number, because the mean of its divisors is an integer number (10261102122).

Almost surely, 2^20522204243 is an apocalyptic number.

20522204243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20522204243 is an equidigital number, since it uses as much as digits as its factorization.

20522204243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 26.

Adding to 20522204243 its reverse (34240222502), we get a palindrome (54762426745).

The spelling of 20522204243 in words is "twenty billion, five hundred twenty-two million, two hundred four thousand, two hundred forty-three".