2011021201100 has 18 divisors (see below), whose sum is σ = 4363916006604. Its totient is φ = 804408480400.

The previous prime is 2011021201081. The next prime is 2011021201121. The reversal of 2011021201100 is 11021201102.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10055105906 + ... + 10055106105.

Almost surely, 2^{2011021201100} is an apocalyptic number.

2011021201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011021201100 is an abundant number, since it is smaller than the sum of its proper divisors (2352894805504).

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

2011021201100 is a wasteful number, since it uses less digits than its factorization.

2011021201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20110212025 (or 20110212018 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2011021201100 its reverse (11021201102), we get a palindrome (2022042402202).

The spelling of 2011021201100 in words is "two trillion, eleven billion, twenty-one million, two hundred one thousand, one hundred".