212421013 has 8 divisors (see below), whose sum is σ = 243093632. Its totient is φ = 181830096.

The previous prime is 212420983. The next prime is 212421019. The reversal of 212421013 is 310124212.

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

It is not a de Polignac number, because 212421013 - 2⁹ = 212420501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212421019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14745 + ... + 25342.

It is an arithmetic number, because the mean of its divisors is an integer number (30386704).

Almost surely, 2^212421013 is an apocalyptic number.

It is an amenable number.

212421013 is a deficient number, since it is larger than the sum of its proper divisors (30672619).

212421013 is an equidigital number, since it uses as much as digits as its factorization.

212421013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40851.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 212421013 is about 14574.6702535598. The cubic root of 212421013 is about 596.6676498151.

Adding to 212421013 its reverse (310124212), we get a palindrome (522545225).

The spelling of 212421013 in words is "two hundred twelve million, four hundred twenty-one thousand, thirteen".