1021225224 has 128 divisors (see below), whose sum is σ = 2875392000. Its totient is φ = 300340224.

The previous prime is 1021225213. The next prime is 1021225237. The reversal of 1021225224 is 4225221201.

1021225224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1021225224.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 797817 + ... + 799095.

It is an arithmetic number, because the mean of its divisors is an integer number (22464000).

Almost surely, 2^1021225224 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 1021225224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1437696000).

1021225224 is an abundant number, since it is smaller than the sum of its proper divisors (1854166776).

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

1021225224 is a wasteful number, since it uses less digits than its factorization.

1021225224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427 (or 1423 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1021225224 is about 31956.6147143279. The cubic root of 1021225224 is about 1007.0256000187.

Adding to 1021225224 its reverse (4225221201), we get a palindrome (5246446425).

The spelling of 1021225224 in words is "one billion, twenty-one million, two hundred twenty-five thousand, two hundred twenty-four".