20042203361 has 2 divisors, whose sum is σ = 20042203362. Its totient is φ = 20042203360.

The previous prime is 20042203241. The next prime is 20042203367. The reversal of 20042203361 is 16330224002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14627451136 + 5414752225 = 120944^2 + 73585^2 .

It is a cyclic number.

It is not a de Polignac number, because 20042203361 - 2¹⁴ = 20042186977 is a prime.

It is not a weakly prime, because it can be changed into another prime (20042203367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021101680 + 10021101681.

It is an arithmetic number, because the mean of its divisors is an integer number (10021101681).

Almost surely, 2^20042203361 is an apocalyptic number.

It is an amenable number.

20042203361 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042203361 is an equidigital number, since it uses as much as digits as its factorization.

20042203361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20042203361 its reverse (16330224002), we get a palindrome (36372427363).

The spelling of 20042203361 in words is "twenty billion, forty-two million, two hundred three thousand, three hundred sixty-one".