201122112111 has 8 divisors (see below), whose sum is σ = 279822069120. Its totient is φ = 128251781592.

The previous prime is 201122112101. The next prime is 201122112127. The reversal of 201122112111 is 111211221102.

It is a happy number.

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

It is not a de Polignac number, because 201122112111 - 2¹⁸ = 201121849967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122112101) 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, 1457406541 + ... + 1457406678.

It is an arithmetic number, because the mean of its divisors is an integer number (34977758640).

Almost surely, 2^201122112111 is an apocalyptic number.

201122112111 is a deficient number, since it is larger than the sum of its proper divisors (78699957009).

201122112111 is a wasteful number, since it uses less digits than its factorization.

201122112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2914813245.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201122112111 its reverse (111211221102), we get a palindrome (312333333213).

The spelling of 201122112111 in words is "two hundred one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred eleven".