1033400221 has 8 divisors (see below), whose sum is σ = 1219126784. Its totient is φ = 857198160.

The previous prime is 1033400197. The next prime is 1033400257. The reversal of 1033400221 is 1220043301.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1033400221 - 2¹¹ = 1033398173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1033400195 and 1033400204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1033400821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2380890 + ... + 2381323.

It is an arithmetic number, because the mean of its divisors is an integer number (152390848).

Almost surely, 2^1033400221 is an apocalyptic number.

It is an amenable number.

1033400221 is a deficient number, since it is larger than the sum of its proper divisors (185726563).

1033400221 is an equidigital number, since it uses as much as digits as its factorization.

1033400221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4762251.

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

The square root of 1033400221 is about 32146.5429089972. The cubic root of 1033400221 is about 1011.0117042844.

Adding to 1033400221 its reverse (1220043301), we get a palindrome (2253443522).

The spelling of 1033400221 in words is "one billion, thirty-three million, four hundred thousand, two hundred twenty-one".