201120202100 has 18 divisors (see below), whose sum is σ = 436430838774. Its totient is φ = 80448080800.

The previous prime is 201120202033. The next prime is 201120202111. The reversal of 201120202100 is 1202021102.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 9981608464 + 191138593636 = 99908^2 + 437194^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1005600911 + ... + 1005601110.

Almost surely, 2^201120202100 is an apocalyptic number.

201120202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201120202100 is an abundant number, since it is smaller than the sum of its proper divisors (235310636674).

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

201120202100 is a wasteful number, since it uses less digits than its factorization.

201120202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011202035 (or 2011202028 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201120202100 its reverse (1202021102), we get a palindrome (202322223202).

The spelling of 201120202100 in words is "two hundred one billion, one hundred twenty million, two hundred two thousand, one hundred".