20012221063 has 2 divisors, whose sum is σ = 20012221064. Its totient is φ = 20012221062.

The previous prime is 20012220983. The next prime is 20012221069. The reversal of 20012221063 is 36012221002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012221063 - 2¹⁷ = 20012089991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20012221063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012221069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006110531 + 10006110532.

It is an arithmetic number, because the mean of its divisors is an integer number (10006110532).

Almost surely, 2^20012221063 is an apocalyptic number.

20012221063 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012221063 is an equidigital number, since it uses as much as digits as its factorization.

20012221063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20012221063 its reverse (36012221002), we get a palindrome (56024442065).

The spelling of 20012221063 in words is "twenty billion, twelve million, two hundred twenty-one thousand, sixty-three".