1212423334 has 16 divisors (see below), whose sum is σ = 1899001440. Its totient is φ = 579458880.

The previous prime is 1212423293. The next prime is 1212423337. The reversal of 1212423334 is 4333242121.

It is a junction number, because it is equal to n+sod(n) for n = 1212423299 and 1212423308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212423337) 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 7 ways as a sum of consecutive naturals, for example, 65824 + ... + 82204.

It is an arithmetic number, because the mean of its divisors is an integer number (118687590).

Almost surely, 2^1212423334 is an apocalyptic number.

1212423334 is a deficient number, since it is larger than the sum of its proper divisors (686578106).

1212423334 is a wasteful number, since it uses less digits than its factorization.

1212423334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18015.

The product of its digits is 3456, while the sum is 25.

The square root of 1212423334 is about 34819.8698159542. The cubic root of 1212423334 is about 1066.3131425888.

Adding to 1212423334 its reverse (4333242121), we get a palindrome (5545665455).

The spelling of 1212423334 in words is "one billion, two hundred twelve million, four hundred twenty-three thousand, three hundred thirty-four".