422400012322021 has 4 divisors (see below), whose sum is σ = 422400370086592. Its totient is φ = 422399654557452.

The previous prime is 422400012322019. The next prime is 422400012322037. The reversal of 422400012322021 is 120223210004224.

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 not a de Polignac number, because 422400012322021 - 2¹ = 422400012322019 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 (422400012325021) 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, 177105405 + ... + 179474578.

It is an arithmetic number, because the mean of its divisors is an integer number (105600092521648).

Almost surely, 2^{422400012322021} is an apocalyptic number.

It is an amenable number.

422400012322021 is a deficient number, since it is larger than the sum of its proper divisors (357764571).

422400012322021 is a wasteful number, since it uses less digits than its factorization.

422400012322021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357764570.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 422400012322021 its reverse (120223210004224), we get a palindrome (542623222326245).

The spelling of 422400012322021 in words is "four hundred twenty-two trillion, four hundred billion, twelve million, three hundred twenty-two thousand, twenty-one".