20424222113 has 2 divisors, whose sum is σ = 20424222114. Its totient is φ = 20424222112.

The previous prime is 20424222107. The next prime is 20424222209. The reversal of 20424222113 is 31122242402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17714811409 + 2709410704 = 133097^2 + 52052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20424222113 is a prime.

It is not a weakly prime, because it can be changed into another prime (20424222613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212111056 + 10212111057.

It is an arithmetic number, because the mean of its divisors is an integer number (10212111057).

Almost surely, 2^20424222113 is an apocalyptic number.

It is an amenable number.

20424222113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20424222113 is an equidigital number, since it uses as much as digits as its factorization.

20424222113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20424222113 its reverse (31122242402), we get a palindrome (51546464515).

The spelling of 20424222113 in words is "twenty billion, four hundred twenty-four million, two hundred twenty-two thousand, one hundred thirteen".