1221224023 has 2 divisors, whose sum is σ = 1221224024. Its totient is φ = 1221224022.

The previous prime is 1221224021. The next prime is 1221224041. The reversal of 1221224023 is 3204221221.

It is a weak prime.

It is an emirp because it is prime and its reverse (3204221221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1221224023 - 2¹ = 1221224021 is a prime.

It is a super-2 number, since 2×1221224023² = 2982776228704609058, which contains 22 as substring.

Together with 1221224021, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221224021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610612011 + 610612012.

It is an arithmetic number, because the mean of its divisors is an integer number (610612012).

Almost surely, 2^1221224023 is an apocalyptic number.

1221224023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221224023 is an equidigital number, since it uses as much as digits as its factorization.

1221224023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1221224023 is about 34946.0158387190. The cubic root of 1221224023 is about 1068.8869617892.

Adding to 1221224023 its reverse (3204221221), we get a palindrome (4425445244).

The spelling of 1221224023 in words is "one billion, two hundred twenty-one million, two hundred twenty-four thousand, twenty-three".