227245605421 has 2 divisors, whose sum is σ = 227245605422. Its totient is φ = 227245605420.

The previous prime is 227245605319. The next prime is 227245605451. The reversal of 227245605421 is 124506542722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154067240196 + 73178365225 = 392514^2 + 270515^2 .

It is a cyclic number.

It is not a de Polignac number, because 227245605421 - 2⁹ = 227245604909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227245605451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113622802710 + 113622802711.

It is an arithmetic number, because the mean of its divisors is an integer number (113622802711).

Almost surely, 2^227245605421 is an apocalyptic number.

It is an amenable number.

227245605421 is a deficient number, since it is larger than the sum of its proper divisors (1).

227245605421 is an equidigital number, since it uses as much as digits as its factorization.

227245605421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 227245605421 in words is "two hundred twenty-seven billion, two hundred forty-five million, six hundred five thousand, four hundred twenty-one".