422121331 has 4 divisors (see below), whose sum is σ = 425857032. Its totient is φ = 418385632.

The previous prime is 422121307. The next prime is 422121353. The reversal of 422121331 is 133121224.

It is a happy number.

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 422121331 - 2¹¹ = 422119283 is a prime.

It is a super-2 number, since 2×422121331² = 356372836170423122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422121299 and 422121308.

It is not an unprimeable number, because it can be changed into a prime (422121031) 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, 1867681 + ... + 1867906.

It is an arithmetic number, because the mean of its divisors is an integer number (106464258).

Almost surely, 2^422121331 is an apocalyptic number.

422121331 is a deficient number, since it is larger than the sum of its proper divisors (3735701).

422121331 is a wasteful number, since it uses less digits than its factorization.

422121331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735700.

The product of its digits is 288, while the sum is 19.

The square root of 422121331 is about 20545.5915222707. The cubic root of 422121331 is about 750.1459455240.

Adding to 422121331 its reverse (133121224), we get a palindrome (555242555).

It can be divided in two parts, 4221 and 21331, that added together give a palindrome (25552).

The spelling of 422121331 in words is "four hundred twenty-two million, one hundred twenty-one thousand, three hundred thirty-one".