210100120 has 32 divisors (see below), whose sum is σ = 474724800. Its totient is φ = 83684608.

The previous prime is 210100073. The next prime is 210100123. The reversal of 210100120 is 21001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210100123) 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, 1429 + ... + 20548.

It is an arithmetic number, because the mean of its divisors is an integer number (14835150).

Almost surely, 2^210100120 is an apocalyptic number.

210100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210100120 is an abundant number, since it is smaller than the sum of its proper divisors (264624680).

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

210100120 is a wasteful number, since it uses less digits than its factorization.

210100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22227 (or 22223 counting only the distinct ones).

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

The square root of 210100120 is about 14494.8308027379. The cubic root of 210100120 is about 594.4866414535.

Adding to 210100120 its reverse (21001012), we get a palindrome (231101132).

The spelling of 210100120 in words is "two hundred ten million, one hundred thousand, one hundred twenty".