422224021 has 8 divisors (see below), whose sum is σ = 437482080. Its totient is φ = 407012592.

The previous prime is 422224013. The next prime is 422224031. The reversal of 422224021 is 120422224.

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 422224021 - 2³ = 422224013 is a prime.

It is a super-5 number, since 5×422224021⁵ (a number of 44 digits) contains 55555 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422224021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422224031) 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, 7326 + ... + 29968.

It is an arithmetic number, because the mean of its divisors is an integer number (54685260).

Almost surely, 2^422224021 is an apocalyptic number.

It is an amenable number.

422224021 is a deficient number, since it is larger than the sum of its proper divisors (15258059).

422224021 is a wasteful number, since it uses less digits than its factorization.

422224021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23315.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 422224021 is about 20548.0904465597. The cubic root of 422224021 is about 750.2067702488.

Adding to 422224021 its reverse (120422224), we get a palindrome (542646245).

The spelling of 422224021 in words is "four hundred twenty-two million, two hundred twenty-four thousand, twenty-one".