20021230241 has 2 divisors, whose sum is σ = 20021230242. Its totient is φ = 20021230240.

The previous prime is 20021230213. The next prime is 20021230319. The reversal of 20021230241 is 14203212002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20021118016 + 112225 = 141496^2 + 335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021230241 is a prime.

It is not a weakly prime, because it can be changed into another prime (20021230441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010615120 + 10010615121.

It is an arithmetic number, because the mean of its divisors is an integer number (10010615121).

Almost surely, 2^20021230241 is an apocalyptic number.

It is an amenable number.

20021230241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021230241 is an equidigital number, since it uses as much as digits as its factorization.

20021230241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20021230241 its reverse (14203212002), we get a palindrome (34224442243).

The spelling of 20021230241 in words is "twenty billion, twenty-one million, two hundred thirty thousand, two hundred forty-one".