226384328921 has 2 divisors, whose sum is σ = 226384328922. Its totient is φ = 226384328920.

The previous prime is 226384328887. The next prime is 226384328983. The reversal of 226384328921 is 129823483622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217772488921 + 8611840000 = 466661^2 + 92800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226384328921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 226384328921.

It is not a weakly prime, because it can be changed into another prime (226384322921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113192164460 + 113192164461.

It is an arithmetic number, because the mean of its divisors is an integer number (113192164461).

Almost surely, 2^226384328921 is an apocalyptic number.

It is an amenable number.

226384328921 is a deficient number, since it is larger than the sum of its proper divisors (1).

226384328921 is an equidigital number, since it uses as much as digits as its factorization.

226384328921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 50.

The spelling of 226384328921 in words is "two hundred twenty-six billion, three hundred eighty-four million, three hundred twenty-eight thousand, nine hundred twenty-one".