422012231 has 4 divisors (see below), whose sum is σ = 422079000. Its totient is φ = 421945464.

The previous prime is 422012209. The next prime is 422012243. The reversal of 422012231 is 132210224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422012231 - 2²² = 417817927 is a prime.

It is a super-2 number, since 2×422012231² = 356188646227194722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422012281) 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, 22781 + ... + 36918.

It is an arithmetic number, because the mean of its divisors is an integer number (105519750).

Almost surely, 2^422012231 is an apocalyptic number.

422012231 is a deficient number, since it is larger than the sum of its proper divisors (66769).

422012231 is an equidigital number, since it uses as much as digits as its factorization.

422012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66768.

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

The square root of 422012231 is about 20542.9362798992. The cubic root of 422012231 is about 750.0813132580.

Adding to 422012231 its reverse (132210224), we get a palindrome (554222455).

The spelling of 422012231 in words is "four hundred twenty-two million, twelve thousand, two hundred thirty-one".