422221380 has 96 divisors (see below), whose sum is σ = 1370234880. Its totient is φ = 95141760.

The previous prime is 422221301. The next prime is 422221381. The reversal of 422221380 is 83122224.

It is a self number, because there is not a number n which added to its sum of digits gives 422221380.

It is not an unprimeable number, because it can be changed into a prime (422221381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22741 + ... + 36899.

It is an arithmetic number, because the mean of its divisors is an integer number (14273280).

Almost surely, 2^422221380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422221380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685117440).

422221380 is an abundant number, since it is smaller than the sum of its proper divisors (948013500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422221380 is a wasteful number, since it uses less digits than its factorization.

422221380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14249 (or 14247 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 422221380 is about 20548.0261825802. The cubic root of 422221380 is about 750.2052060711.

The spelling of 422221380 in words is "four hundred twenty-two million, two hundred twenty-one thousand, three hundred eighty".