226402363204621 has 2 divisors, whose sum is σ = 226402363204622. Its totient is φ = 226402363204620.

The previous prime is 226402363204559. The next prime is 226402363204651. The reversal of 226402363204621 is 126402363204622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130003642863396 + 96398720341225 = 11401914^2 + 9818285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226402363204621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226402363204651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113201181602310 + 113201181602311.

It is an arithmetic number, because the mean of its divisors is an integer number (113201181602311).

Almost surely, 2^{226402363204621} is an apocalyptic number.

It is an amenable number.

226402363204621 is a deficient number, since it is larger than the sum of its proper divisors (1).

226402363204621 is an equidigital number, since it uses as much as digits as its factorization.

226402363204621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 43.

Subtracting from 226402363204621 its reverse (126402363204622), we obtain a palindrome (99999999999999).

The spelling of 226402363204621 in words is "two hundred twenty-six trillion, four hundred two billion, three hundred sixty-three million, two hundred four thousand, six hundred twenty-one".