226821044393 has 2 divisors, whose sum is σ = 226821044394. Its totient is φ = 226821044392.

The previous prime is 226821044377. The next prime is 226821044479. The reversal of 226821044393 is 393440128622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165521226649 + 61299817744 = 406843^2 + 247588^2 .

It is a cyclic number.

It is not a de Polignac number, because 226821044393 - 2⁴ = 226821044377 is a prime.

It is not a weakly prime, because it can be changed into another prime (226821044363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113410522196 + 113410522197.

It is an arithmetic number, because the mean of its divisors is an integer number (113410522197).

Almost surely, 2^226821044393 is an apocalyptic number.

It is an amenable number.

226821044393 is a deficient number, since it is larger than the sum of its proper divisors (1).

226821044393 is an equidigital number, since it uses as much as digits as its factorization.

226821044393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 226821044393 in words is "two hundred twenty-six billion, eight hundred twenty-one million, forty-four thousand, three hundred ninety-three".