212144330 has 8 divisors (see below), whose sum is σ = 381859812. Its totient is φ = 84857728.

The previous prime is 212144321. The next prime is 212144357. The reversal of 212144330 is 33441212.

212144330 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 187333969 + 24810361 = 13687^2 + 4981^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×212144330² = 90010433502297800, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10607207 + ... + 10607226.

Almost surely, 2^212144330 is an apocalyptic number.

212144330 is a deficient number, since it is larger than the sum of its proper divisors (169715482).

212144330 is a wasteful number, since it uses less digits than its factorization.

212144330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21214440.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 212144330 is about 14565.1752478300. The cubic root of 212144330 is about 596.4084797174.

Adding to 212144330 its reverse (33441212), we get a palindrome (245585542).

The spelling of 212144330 in words is "two hundred twelve million, one hundred forty-four thousand, three hundred thirty".