20021012222041 has 2 divisors, whose sum is σ = 20021012222042. Its totient is φ = 20021012222040.

The previous prime is 20021012221963. The next prime is 20021012222053. The reversal of 20021012222041 is 14022221012002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11417613968016 + 8603398254025 = 3378996^2 + 2933155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021012222041 is a prime.

It is not a weakly prime, because it can be changed into another prime (20021012222441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010506111020 + 10010506111021.

It is an arithmetic number, because the mean of its divisors is an integer number (10010506111021).

Almost surely, 2^{20021012222041} is an apocalyptic number.

It is an amenable number.

20021012222041 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021012222041 is an equidigital number, since it uses as much as digits as its factorization.

20021012222041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20021012222041 its reverse (14022221012002), we get a palindrome (34043233234043).

The spelling of 20021012222041 in words is "twenty trillion, twenty-one billion, twelve million, two hundred twenty-two thousand, forty-one".