201021111211100 has 18 divisors (see below), whose sum is σ = 436215811328304. Its totient is φ = 80408444484400.

The previous prime is 201021111211043. The next prime is 201021111211169. The reversal of 201021111211100 is 1112111120102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1005105555956 + ... + 1005105556155.

Almost surely, 2^{201021111211100} is an apocalyptic number.

201021111211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201021111211100 is an abundant number, since it is smaller than the sum of its proper divisors (235194700117204).

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

201021111211100 is a wasteful number, since it uses less digits than its factorization.

201021111211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010211112125 (or 2010211112118 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 201021111211100 its reverse (1112111120102), we get a palindrome (202133222331202).

The spelling of 201021111211100 in words is "two hundred one trillion, twenty-one billion, one hundred eleven million, two hundred eleven thousand, one hundred".