212201423 has 8 divisors (see below), whose sum is σ = 243213600. Its totient is φ = 181363680.

The previous prime is 212201419. The next prime is 212201467. The reversal of 212201423 is 324102212.

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

It is a cyclic number.

It is not a de Polignac number, because 212201423 - 2² = 212201419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40988 + ... + 45873.

It is an arithmetic number, because the mean of its divisors is an integer number (30401700).

Almost surely, 2^212201423 is an apocalyptic number.

212201423 is a deficient number, since it is larger than the sum of its proper divisors (31012177).

212201423 is an equidigital number, since it uses as much as digits as its factorization.

212201423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87217.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212201423 is about 14567.1350306091. The cubic root of 212201423 is about 596.4619774080.

Adding to 212201423 its reverse (324102212), we get a palindrome (536303635).

The spelling of 212201423 in words is "two hundred twelve million, two hundred one thousand, four hundred twenty-three".