1033213321 has 4 divisors (see below), whose sum is σ = 1180815232. Its totient is φ = 885611412.

The previous prime is 1033213309. The next prime is 1033213343. The reversal of 1033213321 is 1233123301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1033213321 - 2²¹ = 1031116169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1033213351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73800945 + ... + 73800958.

It is an arithmetic number, because the mean of its divisors is an integer number (295203808).

Almost surely, 2^1033213321 is an apocalyptic number.

It is an amenable number.

1033213321 is a deficient number, since it is larger than the sum of its proper divisors (147601911).

1033213321 is an equidigital number, since it uses as much as digits as its factorization.

1033213321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147601910.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1033213321 is about 32143.6357775532. The cubic root of 1033213321 is about 1010.9507503330.

Adding to 1033213321 its reverse (1233123301), we get a palindrome (2266336622).

It can be divided in two parts, 10332 and 13321, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 1033213321 in words is "one billion, thirty-three million, two hundred thirteen thousand, three hundred twenty-one".