120205100 has 36 divisors (see below), whose sum is σ = 261571800. Its totient is φ = 47948160.

The previous prime is 120205093. The next prime is 120205109. The reversal of 120205100 is 1502021.

It is not an unprimeable number, because it can be changed into a prime (120205109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39431 + ... + 42369.

Almost surely, 2^120205100 is an apocalyptic number.

120205100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120205100 is an abundant number, since it is smaller than the sum of its proper divisors (141366700).

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

120205100 is a wasteful number, since it uses less digits than its factorization.

120205100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362 (or 3355 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 120205100 is about 10963.8086448095. The cubic root of 120205100 is about 493.5232660843.

Adding to 120205100 its reverse (1502021), we get a palindrome (121707121).

The spelling of 120205100 in words is "one hundred twenty million, two hundred five thousand, one hundred".