201222097 has 8 divisors (see below), whose sum is σ = 208529640. Its totient is φ = 193939200.

The previous prime is 201222067. The next prime is 201222121. The reversal of 201222097 is 790222102.

It can be written as a sum of positive squares in 4 ways, for example, as 66569281 + 134652816 = 8159^2 + 11604^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201222097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201222067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11347 + ... + 23047.

It is an arithmetic number, because the mean of its divisors is an integer number (26066205).

Almost surely, 2^201222097 is an apocalyptic number.

It is an amenable number.

201222097 is a deficient number, since it is larger than the sum of its proper divisors (7307543).

201222097 is a wasteful number, since it uses less digits than its factorization.

201222097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12323.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 201222097 is about 14185.2774734934. The cubic root of 201222097 is about 585.9922741238.

Adding to 201222097 its reverse (790222102), we get a palindrome (991444199).

The spelling of 201222097 in words is "two hundred one million, two hundred twenty-two thousand, ninety-seven".