212210380 has 24 divisors (see below), whose sum is σ = 447228432. Its totient is φ = 84581952.

The previous prime is 212210377. The next prime is 212210413. The reversal of 212210380 is 83012212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13087 + ... + 24406.

It is an arithmetic number, because the mean of its divisors is an integer number (18634518).

Almost surely, 2^212210380 is an apocalyptic number.

212210380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212210380 is an abundant number, since it is smaller than the sum of its proper divisors (235018052).

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

212210380 is a wasteful number, since it uses less digits than its factorization.

212210380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37785 (or 37783 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 212210380 is about 14567.4424659924. The cubic root of 212210380 is about 596.4703694892.

Adding to 212210380 its reverse (83012212), we get a palindrome (295222592).

The spelling of 212210380 in words is "two hundred twelve million, two hundred ten thousand, three hundred eighty".