212214280 has 32 divisors (see below), whose sum is σ = 481872600. Its totient is φ = 84105216.

The previous prime is 212214269. The next prime is 212214311. The reversal of 212214280 is 82412212.

It can be written as a sum of positive squares in 4 ways, for example, as 129367876 + 82846404 = 11374^2 + 9102^2 .

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, 19977 + ... + 28696.

Almost surely, 2^212214280 is an apocalyptic number.

212214280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212214280 is an abundant number, since it is smaller than the sum of its proper divisors (269658320).

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

212214280 is a wasteful number, since it uses less digits than its factorization.

212214280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48793 (or 48789 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 212214280 is about 14567.5763255251. The cubic root of 212214280 is about 596.4740234421.

Adding to 212214280 its reverse (82412212), we get a palindrome (294626492).

The spelling of 212214280 in words is "two hundred twelve million, two hundred fourteen thousand, two hundred eighty".