212421010 has 8 divisors (see below), whose sum is σ = 382357836. Its totient is φ = 84968400.

The previous prime is 212420983. The next prime is 212421019. The reversal of 212421010 is 10124212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 198049329 + 14371681 = 14073^2 + 3791^2 .

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

It is not an unprimeable number, because it can be changed into a prime (212421019) 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, 10621041 + ... + 10621060.

Almost surely, 2^212421010 is an apocalyptic number.

212421010 is a deficient number, since it is larger than the sum of its proper divisors (169936826).

212421010 is a wasteful number, since it uses less digits than its factorization.

212421010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21242108.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 212421010 is about 14574.6701506415. The cubic root of 212421010 is about 596.6676470062.

Adding to 212421010 its reverse (10124212), we get a palindrome (222545222).

The spelling of 212421010 in words is "two hundred twelve million, four hundred twenty-one thousand, ten".