22001220229 has 2 divisors, whose sum is σ = 22001220230. Its totient is φ = 22001220228.

The previous prime is 22001220217. The next prime is 22001220247. The reversal of 22001220229 is 92202210022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21250350625 + 750869604 = 145775^2 + 27402^2 .

It is a cyclic number.

It is not a de Polignac number, because 22001220229 - 2⁹ = 22001219717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22001020229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000610114 + 11000610115.

It is an arithmetic number, because the mean of its divisors is an integer number (11000610115).

Almost surely, 2^22001220229 is an apocalyptic number.

It is an amenable number.

22001220229 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001220229 is an equidigital number, since it uses as much as digits as its factorization.

22001220229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 22001220229 in words is "twenty-two billion, one million, two hundred twenty thousand, two hundred twenty-nine".