1033021220 has 96 divisors (see below), whose sum is σ = 2735389440. Its totient is φ = 318320640.

The previous prime is 1033021219. The next prime is 1033021229. The reversal of 1033021220 is 221203301.

It is a happy number.

1033021220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1033021195 and 1033021204.

It is not an unprimeable number, because it can be changed into a prime (1033021229) 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, 133292 + ... + 140828.

It is an arithmetic number, because the mean of its divisors is an integer number (28493640).

Almost surely, 2^1033021220 is an apocalyptic number.

1033021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1033021220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1367694720).

1033021220 is an abundant number, since it is smaller than the sum of its proper divisors (1702368220).

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

1033021220 is a wasteful number, since it uses less digits than its factorization.

1033021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7653 (or 7651 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1033021220 is about 32140.6474732542. The cubic root of 1033021220 is about 1010.8880925116. Note that the first 3 decimals are identical.

Adding to 1033021220 its reverse (221203301), we get a palindrome (1254224521).

The spelling of 1033021220 in words is "one billion, thirty-three million, twenty-one thousand, two hundred twenty".