212421382 has 8 divisors (see below), whose sum is σ = 321787152. Its totient is φ = 105159000.

The previous prime is 212421371. The next prime is 212421389. The reversal of 212421382 is 283124212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212421389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525594 + ... + 525997.

It is an arithmetic number, because the mean of its divisors is an integer number (40223394).

Almost surely, 2^212421382 is an apocalyptic number.

212421382 is a deficient number, since it is larger than the sum of its proper divisors (109365770).

212421382 is a wasteful number, since it uses less digits than its factorization.

212421382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051694.

The product of its digits is 1536, while the sum is 25.

The square root of 212421382 is about 14574.6829125028. The cubic root of 212421382 is about 596.6679953086.

Adding to 212421382 its reverse (283124212), we get a palindrome (495545594).

The spelling of 212421382 in words is "two hundred twelve million, four hundred twenty-one thousand, three hundred eighty-two".