201220422424 has 64 divisors (see below), whose sum is σ = 446512435200. Its totient is φ = 83178259584.

The previous prime is 201220422413. The next prime is 201220422449. The reversal of 201220422424 is 424224022102.

201220422424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1533369 + ... + 1659415.

It is an arithmetic number, because the mean of its divisors is an integer number (6976756800).

Almost surely, 2^201220422424 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 201220422424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223256217600).

201220422424 is an abundant number, since it is smaller than the sum of its proper divisors (245292012776).

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

201220422424 is a wasteful number, since it uses less digits than its factorization.

201220422424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127072 (or 127068 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 201220422424 its reverse (424224022102), we get a palindrome (625444444526).

The spelling of 201220422424 in words is "two hundred one billion, two hundred twenty million, four hundred twenty-two thousand, four hundred twenty-four".