1221033299 has 4 divisors (see below), whose sum is σ = 1222230240. Its totient is φ = 1219836360.

The previous prime is 1221033293. The next prime is 1221033349. The reversal of 1221033299 is 9923301221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1221033299 - 2¹⁶ = 1220967763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221033293) 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, 596939 + ... + 598980.

It is an arithmetic number, because the mean of its divisors is an integer number (305557560).

Almost surely, 2^1221033299 is an apocalyptic number.

1221033299 is a deficient number, since it is larger than the sum of its proper divisors (1196941).

1221033299 is a wasteful number, since it uses less digits than its factorization.

1221033299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196940.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1221033299 is about 34943.2868946240. The cubic root of 1221033299 is about 1068.8313146115.

The spelling of 1221033299 in words is "one billion, two hundred twenty-one million, thirty-three thousand, two hundred ninety-nine".