1033221040 has 20 divisors (see below), whose sum is σ = 2402239104. Its totient is φ = 413288384.

The previous prime is 1033221029. The next prime is 1033221043. The reversal of 1033221040 is 401223301.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1033221043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6457552 + ... + 6457711.

Almost surely, 2^1033221040 is an apocalyptic number.

1033221040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1033221040 is an abundant number, since it is smaller than the sum of its proper divisors (1369018064).

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

1033221040 is a wasteful number, since it uses less digits than its factorization.

1033221040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12915276 (or 12915270 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1033221040 is about 32143.7558477537. The cubic root of 1033221040 is about 1010.9532678865.

Adding to 1033221040 its reverse (401223301), we get a palindrome (1434444341).

The spelling of 1033221040 in words is "one billion, thirty-three million, two hundred twenty-one thousand, forty".