1212223033 has 4 divisors (see below), whose sum is σ = 1385397760. Its totient is φ = 1039048308.

The previous prime is 1212223007. The next prime is 1212223043. The reversal of 1212223033 is 3303222121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3303222121 = 127 ⋅26009623.

It is a cyclic number.

It is not a de Polignac number, because 1212223033 - 2¹³ = 1212214841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212223033.

It is not an unprimeable number, because it can be changed into a prime (1212223003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86587353 + ... + 86587366.

It is an arithmetic number, because the mean of its divisors is an integer number (346349440).

Almost surely, 2^1212223033 is an apocalyptic number.

It is an amenable number.

1212223033 is a deficient number, since it is larger than the sum of its proper divisors (173174727).

1212223033 is an equidigital number, since it uses as much as digits as its factorization.

1212223033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173174726.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1212223033 is about 34816.9934514742. The cubic root of 1212223033 is about 1066.2544185041.

Adding to 1212223033 its reverse (3303222121), we get a palindrome (4515445154).

The spelling of 1212223033 in words is "one billion, two hundred twelve million, two hundred twenty-three thousand, thirty-three".