212421441 has 8 divisors (see below), whose sum is σ = 286814080. Its totient is φ = 139821552.

The previous prime is 212421431. The next prime is 212421449. The reversal of 212421441 is 144124212.

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

It is not a de Polignac number, because 212421441 - 2¹¹ = 212419393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212421449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447910 + ... + 448383.

It is an arithmetic number, because the mean of its divisors is an integer number (35851760).

Almost surely, 2^212421441 is an apocalyptic number.

It is an amenable number.

212421441 is a deficient number, since it is larger than the sum of its proper divisors (74392639).

212421441 is an equidigital number, since it uses as much as digits as its factorization.

212421441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896375.

The product of its digits is 512, while the sum is 21.

The square root of 212421441 is about 14574.6849365604. The cubic root of 212421441 is about 596.6680505501.

Adding to 212421441 its reverse (144124212), we get a palindrome (356545653).

The spelling of 212421441 in words is "two hundred twelve million, four hundred twenty-one thousand, four hundred forty-one".