2011022121100 has 18 divisors (see below), whose sum is σ = 4363918003004. Its totient is φ = 804408848400.

The previous prime is 2011022121083. The next prime is 2011022121187. The reversal of 2011022121100 is 11212201102.

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 5 ways as a sum of consecutive naturals, for example, 10055110506 + ... + 10055110705.

Almost surely, 2^{2011022121100} is an apocalyptic number.

2011022121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011022121100 is an abundant number, since it is smaller than the sum of its proper divisors (2352895881904).

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

2011022121100 is a wasteful number, since it uses less digits than its factorization.

2011022121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20110221225 (or 20110221218 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2011022121100 its reverse (11212201102), we get a palindrome (2022234322202).

The spelling of 2011022121100 in words is "two trillion, eleven billion, twenty-two million, one hundred twenty-one thousand, one hundred".