201211022111 has 8 divisors (see below), whose sum is σ = 219509313744. Its totient is φ = 182913793920.

The previous prime is 201211022099. The next prime is 201211022137. The reversal of 201211022111 is 111220112102.

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

It is not a de Polignac number, because 201211022111 - 2¹⁰ = 201211021087 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 (201211022911) 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, 159335 + ... + 654071.

It is an arithmetic number, because the mean of its divisors is an integer number (27438664218).

Almost surely, 2^201211022111 is an apocalyptic number.

201211022111 is a deficient number, since it is larger than the sum of its proper divisors (18298291633).

201211022111 is a wasteful number, since it uses less digits than its factorization.

201211022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531721.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201211022111 its reverse (111220112102), we get a palindrome (312431134213).

The spelling of 201211022111 in words is "two hundred one billion, two hundred eleven million, twenty-two thousand, one hundred eleven".