226506227921 has 2 divisors, whose sum is σ = 226506227922. Its totient is φ = 226506227920.

The previous prime is 226506227897. The next prime is 226506227939. The reversal of 226506227921 is 129722605622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156895210000 + 69611017921 = 396100^2 + 263839^2 .

It is a cyclic number.

It is not a de Polignac number, because 226506227921 - 2²² = 226502033617 is a prime.

It is not a weakly prime, because it can be changed into another prime (226506227951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113253113960 + 113253113961.

It is an arithmetic number, because the mean of its divisors is an integer number (113253113961).

Almost surely, 2^226506227921 is an apocalyptic number.

It is an amenable number.

226506227921 is a deficient number, since it is larger than the sum of its proper divisors (1).

226506227921 is an equidigital number, since it uses as much as digits as its factorization.

226506227921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 226506227921 in words is "two hundred twenty-six billion, five hundred six million, two hundred twenty-seven thousand, nine hundred twenty-one".