1212233321 has 8 divisors (see below), whose sum is σ = 1350499080. Its totient is φ = 1080398592.

The previous prime is 1212233303. The next prime is 1212233327. The reversal of 1212233321 is 1233322121.

It can be written as a sum of positive squares in 4 ways, for example, as 36772096 + 1175461225 = 6064^2 + 34285^2 .

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

It is not a de Polignac number, because 1212233321 - 2¹⁴ = 1212216937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212233293 and 1212233302.

It is not an unprimeable number, because it can be changed into a prime (1212233327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1607360 + ... + 1608113.

It is an arithmetic number, because the mean of its divisors is an integer number (168812385).

Almost surely, 2^1212233321 is an apocalyptic number.

It is an amenable number.

1212233321 is a deficient number, since it is larger than the sum of its proper divisors (138265759).

1212233321 is a wasteful number, since it uses less digits than its factorization.

1212233321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215515.

The product of its digits is 432, while the sum is 20.

The square root of 1212233321 is about 34817.1411951068. The cubic root of 1212233321 is about 1066.2574348892.

Adding to 1212233321 its reverse (1233322121), we get a palindrome (2445555442).

The spelling of 1212233321 in words is "one billion, two hundred twelve million, two hundred thirty-three thousand, three hundred twenty-one".