21220022063 has 2 divisors, whose sum is σ = 21220022064. Its totient is φ = 21220022062.

The previous prime is 21220022059. The next prime is 21220022077. The reversal of 21220022063 is 36022002212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21220022063 - 2² = 21220022059 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21220022023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610011031 + 10610011032.

It is an arithmetic number, because the mean of its divisors is an integer number (10610011032).

Almost surely, 2^21220022063 is an apocalyptic number.

21220022063 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220022063 is an equidigital number, since it uses as much as digits as its factorization.

21220022063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21220022063 its reverse (36022002212), we get a palindrome (57242024275).

The spelling of 21220022063 in words is "twenty-one billion, two hundred twenty million, twenty-two thousand, sixty-three".