201122212011 has 12 divisors (see below), whose sum is σ = 311944655592. Its totient is φ = 114926978208.

The previous prime is 201122211937. The next prime is 201122212037. The reversal of 201122212011 is 110212221102.

It is not a de Polignac number, because 201122212011 - 2²³ = 201113823403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201122212111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 684089010 + ... + 684089303.

It is an arithmetic number, because the mean of its divisors is an integer number (25995387966).

Almost surely, 2^201122212011 is an apocalyptic number.

201122212011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201122212011 is a deficient number, since it is larger than the sum of its proper divisors (110822443581).

201122212011 is a wasteful number, since it uses less digits than its factorization.

201122212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368178330 (or 1368178323 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201122212011 its reverse (110212221102), we get a palindrome (311334433113).

Subtracting from 201122212011 its reverse (110212221102), we obtain a palindrome (90909990909).

The spelling of 201122212011 in words is "two hundred one billion, one hundred twenty-two million, two hundred twelve thousand, eleven".