210030100 has 36 divisors (see below), whose sum is σ = 520876384. Its totient is φ = 72010080.

The previous prime is 210030091. The next prime is 210030101. The reversal of 210030100 is 1030012.

It is a super-2 number, since 2×210030100² = 88225285812020000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210030101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149322 + ... + 150721.

Almost surely, 2^210030100 is an apocalyptic number.

210030100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210030100 is an abundant number, since it is smaller than the sum of its proper divisors (310846284).

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

210030100 is a wasteful number, since it uses less digits than its factorization.

210030100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300064 (or 300057 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 210030100 is about 14492.4152576443. The cubic root of 210030100 is about 594.4205926578.

Adding to 210030100 its reverse (1030012), we get a palindrome (211060112).

The spelling of 210030100 in words is "two hundred ten million, thirty thousand, one hundred".