9012221201 has 2 divisors, whose sum is σ = 9012221202. Its totient is φ = 9012221200.

The previous prime is 9012221161. The next prime is 9012221233. The reversal of 9012221201 is 1021222109.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8574574801 + 437646400 = 92599^2 + 20920^2 .

It is a cyclic number.

It is not a de Polignac number, because 9012221201 - 2³⁰ = 7938479377 is a prime.

It is not a weakly prime, because it can be changed into another prime (9012221501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4506110600 + 4506110601.

It is an arithmetic number, because the mean of its divisors is an integer number (4506110601).

Almost surely, 2^9012221201 is an apocalyptic number.

It is an amenable number.

9012221201 is a deficient number, since it is larger than the sum of its proper divisors (1).

9012221201 is an equidigital number, since it uses as much as digits as its factorization.

9012221201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 9012221201 is about 94932.7193384873. The cubic root of 9012221201 is about 2081.0249202604.

The spelling of 9012221201 in words is "nine billion, twelve million, two hundred twenty-one thousand, two hundred one".