1221033233 has 16 divisors (see below), whose sum is σ = 1474416000. Its totient is φ = 987800832.

The previous prime is 1221033199. The next prime is 1221033277. The reversal of 1221033233 is 3323301221.

It is a cyclic number.

It is not a de Polignac number, because 1221033233 - 2¹⁶ = 1220967697 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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18713 + ... + 52841.

It is an arithmetic number, because the mean of its divisors is an integer number (92151000).

Almost surely, 2^1221033233 is an apocalyptic number.

It is an amenable number.

1221033233 is a deficient number, since it is larger than the sum of its proper divisors (253382767).

1221033233 is a wasteful number, since it uses less digits than its factorization.

1221033233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34424.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1221033233 is about 34943.2859502366. The cubic root of 1221033233 is about 1068.8312953538.

Adding to 1221033233 its reverse (3323301221), we get a palindrome (4544334454).

The spelling of 1221033233 in words is "one billion, two hundred twenty-one million, thirty-three thousand, two hundred thirty-three".