1221233323 has 4 divisors (see below), whose sum is σ = 1274330448. Its totient is φ = 1168136200.

The previous prime is 1221233311. The next prime is 1221233329. The reversal of 1221233323 is 3233321221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3233321221 = 13 ⋅248717017.

It is a cyclic number.

It is not a de Polignac number, because 1221233323 - 2²⁹ = 684362411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1221233294 and 1221233303.

It is not an unprimeable number, because it can be changed into a prime (1221233329) 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, 26548528 + ... + 26548573.

It is an arithmetic number, because the mean of its divisors is an integer number (318582612).

Almost surely, 2^1221233323 is an apocalyptic number.

1221233323 is a deficient number, since it is larger than the sum of its proper divisors (53097125).

1221233323 is an equidigital number, since it uses as much as digits as its factorization.

1221233323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53097124.

The product of its digits is 1296, while the sum is 22.

The square root of 1221233323 is about 34946.1489008446. The cubic root of 1221233323 is about 1068.8896750843.

Adding to 1221233323 its reverse (3233321221), we get a palindrome (4454554544).

The spelling of 1221233323 in words is "one billion, two hundred twenty-one million, two hundred thirty-three thousand, three hundred twenty-three".