422328557921 has 8 divisors (see below), whose sum is σ = 430657770600. Its totient is φ = 414012706432.

The previous prime is 422328557887. The next prime is 422328557969. The reversal of 422328557921 is 129755823224.

It can be written as a sum of positive squares in 4 ways, for example, as 47245804321 + 375082753600 = 217361^2 + 612440^2 .

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 422328557921 - 2³⁰ = 421254816097 is a prime.

It is a super-2 number, since 2×422328557921² (a number of 24 digits) contains 22 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 422328557921.

It is not an unprimeable number, because it can be changed into a prime (422328557221) 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, 3276446 + ... + 3402903.

It is an arithmetic number, because the mean of its divisors is an integer number (53832221325).

Almost surely, 2^422328557921 is an apocalyptic number.

It is an amenable number.

422328557921 is a deficient number, since it is larger than the sum of its proper divisors (8329212679).

422328557921 is a wasteful number, since it uses less digits than its factorization.

422328557921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6680595.

The product of its digits is 2419200, while the sum is 50.

The spelling of 422328557921 in words is "four hundred twenty-two billion, three hundred twenty-eight million, five hundred fifty-seven thousand, nine hundred twenty-one".