201100120 has 32 divisors (see below), whose sum is σ = 487282320. Its totient is φ = 74252160.

The previous prime is 201100117. The next prime is 201100129. The reversal of 201100120 is 21001102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201100129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192846 + ... + 193885.

Almost surely, 2^201100120 is an apocalyptic number.

201100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201100120 is an abundant number, since it is smaller than the sum of its proper divisors (286182200).

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

201100120 is a wasteful number, since it uses less digits than its factorization.

201100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386755 (or 386751 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 201100120 is about 14180.9773993191. The cubic root of 201100120 is about 585.8738444080.

Adding to 201100120 its reverse (21001102), we get a palindrome (222101222).

The spelling of 201100120 in words is "two hundred one million, one hundred thousand, one hundred twenty".