20002226473 has 2 divisors, whose sum is σ = 20002226474. Its totient is φ = 20002226472.

The previous prime is 20002226449. The next prime is 20002226477. The reversal of 20002226473 is 37462220002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16362758889 + 3639467584 = 127917^2 + 60328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002226473 is a prime.

It is not a weakly prime, because it can be changed into another prime (20002226477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001113236 + 10001113237.

It is an arithmetic number, because the mean of its divisors is an integer number (10001113237).

Almost surely, 2^20002226473 is an apocalyptic number.

It is an amenable number.

20002226473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002226473 is an equidigital number, since it uses as much as digits as its factorization.

20002226473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 20002226473 its reverse (37462220002), we get a palindrome (57464446475).

The spelling of 20002226473 in words is "twenty billion, two million, two hundred twenty-six thousand, four hundred seventy-three".