212100330 has 64 divisors (see below), whose sum is σ = 580462848. Its totient is φ = 49136640.

The previous prime is 212100307. The next prime is 212100337. The reversal of 212100330 is 33001212.

It is a happy number.

It is a super-2 number, since 2×212100330² = 89973099972217800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212100337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9366 + ... + 22625.

It is an arithmetic number, because the mean of its divisors is an integer number (9069732).

Almost surely, 2^212100330 is an apocalyptic number.

212100330 is an abundant number, since it is smaller than the sum of its proper divisors (368362518).

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

212100330 is a wasteful number, since it uses less digits than its factorization.

212100330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32031.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 212100330 is about 14563.6647173711. The cubic root of 212100330 is about 596.3672439738.

Adding to 212100330 its reverse (33001212), we get a palindrome (245101542).

The spelling of 212100330 in words is "two hundred twelve million, one hundred thousand, three hundred thirty".