422334020021 has 4 divisors (see below), whose sum is σ = 427422381792. Its totient is φ = 417245658252.

The previous prime is 422334019951. The next prime is 422334020039. The reversal of 422334020021 is 120020433224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422334020021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422334020621) 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 3 ways as a sum of consecutive naturals, for example, 2544180761 + ... + 2544180926.

It is an arithmetic number, because the mean of its divisors is an integer number (106855595448).

Almost surely, 2^422334020021 is an apocalyptic number.

It is an amenable number.

422334020021 is a deficient number, since it is larger than the sum of its proper divisors (5088361771).

422334020021 is an equidigital number, since it uses as much as digits as its factorization.

422334020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5088361770.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 422334020021 its reverse (120020433224), we get a palindrome (542354453245).

The spelling of 422334020021 in words is "four hundred twenty-two billion, three hundred thirty-four million, twenty thousand, twenty-one".