201222000191 has 16 divisors (see below), whose sum is σ = 225724492800. Its totient is φ = 178463390688.

The previous prime is 201222000167. The next prime is 201222000197. The reversal of 201222000191 is 191000222102.

It is a happy number.

It is not a de Polignac number, because 201222000191 - 2⁶ = 201222000127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222000197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4877996 + ... + 4919073.

It is an arithmetic number, because the mean of its divisors is an integer number (14107780800).

Almost surely, 2^201222000191 is an apocalyptic number.

201222000191 is a deficient number, since it is larger than the sum of its proper divisors (24502492609).

201222000191 is a wasteful number, since it uses less digits than its factorization.

201222000191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9797158.

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

Adding to 201222000191 its reverse (191000222102), we get a palindrome (392222222293).

The spelling of 201222000191 in words is "two hundred one billion, two hundred twenty-two million, one hundred ninety-one", and thus it is an aban number.