201222106 has 4 divisors (see below), whose sum is σ = 301833162. Its totient is φ = 100611052.

The previous prime is 201222067. The next prime is 201222121. The reversal of 201222106 is 601222102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 108889225 + 92332881 = 10435^2 + 9609^2 .

It is a super-3 number, since 3×201222106³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201222106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50305525 + ... + 50305528.

Almost surely, 2^201222106 is an apocalyptic number.

201222106 is a deficient number, since it is larger than the sum of its proper divisors (100611056).

201222106 is a wasteful number, since it uses less digits than its factorization.

201222106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100611055.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 201222106 is about 14185.2777907237. The cubic root of 201222106 is about 585.9922828603.

Adding to 201222106 its reverse (601222102), we get a palindrome (802444208).

The spelling of 201222106 in words is "two hundred one million, two hundred twenty-two thousand, one hundred six".