1201223424 has 72 divisors (see below), whose sum is σ = 3215841552. Its totient is φ = 398049280.

The previous prime is 1201223399. The next prime is 1201223431. The reversal of 1201223424 is 4243221021.

It is a self number, because there is not a number n which added to its sum of digits gives 1201223424.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128344 + ... + 137384.

It is an arithmetic number, because the mean of its divisors is an integer number (44664466).

Almost surely, 2^1201223424 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 1201223424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1607920776).

1201223424 is an abundant number, since it is smaller than the sum of its proper divisors (2014618128).

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

1201223424 is an equidigital number, since it uses as much as digits as its factorization.

1201223424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9233 (or 9219 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1201223424 is about 34658.6702572387. The cubic root of 1201223424 is about 1063.0195804125.

Adding to 1201223424 its reverse (4243221021), we get a palindrome (5444444445).

The spelling of 1201223424 in words is "one billion, two hundred one million, two hundred twenty-three thousand, four hundred twenty-four".