201122100111 has 8 divisors (see below), whose sum is σ = 276813213184. Its totient is φ = 129756193560.

The previous prime is 201122100079. The next prime is 201122100121. The reversal of 201122100111 is 111001221102.

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

It is not a de Polignac number, because 201122100111 - 2⁵ = 201122100079 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 (201122100121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1081301521 + ... + 1081301706.

It is an arithmetic number, because the mean of its divisors is an integer number (34601651648).

Almost surely, 2^201122100111 is an apocalyptic number.

201122100111 is a deficient number, since it is larger than the sum of its proper divisors (75691113073).

201122100111 is a wasteful number, since it uses less digits than its factorization.

201122100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162603261.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 201122100111 its reverse (111001221102), we get a palindrome (312123321213).

The spelling of 201122100111 in words is "two hundred one billion, one hundred twenty-two million, one hundred thousand, one hundred eleven".