201111122100 has 144 divisors (see below), whose sum is σ = 700007974400. Its totient is φ = 43548865920.

The previous prime is 201111122071. The next prime is 201111122111. The reversal of 201111122100 is 1221111102.

It is a super-2 number, since 2×201111122100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2480290 + ... + 2560089.

Almost surely, 2^201111122100 is an apocalyptic number.

201111122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201111122100 is an abundant number, since it is smaller than the sum of its proper divisors (498896852300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201111122100 is a wasteful number, since it uses less digits than its factorization.

201111122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040422 (or 5040415 counting only the distinct ones).

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

Adding to 201111122100 its reverse (1221111102), we get a palindrome (202332233202).

The spelling of 201111122100 in words is "two hundred one billion, one hundred eleven million, one hundred twenty-two thousand, one hundred".