422311232421 has 24 divisors (see below), whose sum is σ = 657236379800. Its totient is φ = 259762070016.

The previous prime is 422311232419. The next prime is 422311232423. The reversal of 422311232421 is 124232113224.

422311232421 is a `hidden beast` number, since 4 + 2 + 2 + 3 + 1 + 1 + 232 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (422311232419) and next prime (422311232423).

It can be written as a sum of positive squares in 4 ways, for example, as 2943605025 + 419367627396 = 54255^2 + 647586^2 .

It is not a de Polignac number, because 422311232421 - 2¹ = 422311232419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422311232423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 594496 + ... + 1094553.

Almost surely, 2^422311232421 is an apocalyptic number.

It is an amenable number.

422311232421 is a deficient number, since it is larger than the sum of its proper divisors (234925147379).

422311232421 is a wasteful number, since it uses less digits than its factorization.

422311232421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691205 (or 1691202 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 422311232421 its reverse (124232113224), we get a palindrome (546543345645).

The spelling of 422311232421 in words is "four hundred twenty-two billion, three hundred eleven million, two hundred thirty-two thousand, four hundred twenty-one".