1212223342 has 32 divisors (see below), whose sum is σ = 2031796224. Its totient is φ = 537703200.

The previous prime is 1212223297. The next prime is 1212223361. The reversal of 1212223342 is 2433222121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394492 + ... + 397552.

It is an arithmetic number, because the mean of its divisors is an integer number (63493632).

Almost surely, 2^1212223342 is an apocalyptic number.

1212223342 is a deficient number, since it is larger than the sum of its proper divisors (819572882).

1212223342 is a wasteful number, since it uses less digits than its factorization.

1212223342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504.

The product of its digits is 1152, while the sum is 22.

The square root of 1212223342 is about 34816.9978889622. The cubic root of 1212223342 is about 1066.2545091014.

Adding to 1212223342 its reverse (2433222121), we get a palindrome (3645445463).

The spelling of 1212223342 in words is "one billion, two hundred twelve million, two hundred twenty-three thousand, three hundred forty-two".