229221107729 has 2 divisors, whose sum is σ = 229221107730. Its totient is φ = 229221107728.

The previous prime is 229221107681. The next prime is 229221107749. The reversal of 229221107729 is 927701122922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149726433025 + 79494674704 = 386945^2 + 281948^2 .

It is a cyclic number.

It is not a de Polignac number, because 229221107729 - 2³² = 224926140433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 229221107729.

It is not a weakly prime, because it can be changed into another prime (229221107749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114610553864 + 114610553865.

It is an arithmetic number, because the mean of its divisors is an integer number (114610553865).

Almost surely, 2^229221107729 is an apocalyptic number.

It is an amenable number.

229221107729 is a deficient number, since it is larger than the sum of its proper divisors (1).

229221107729 is an equidigital number, since it uses as much as digits as its factorization.

229221107729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The spelling of 229221107729 in words is "two hundred twenty-nine billion, two hundred twenty-one million, one hundred seven thousand, seven hundred twenty-nine".