1212221342 has 8 divisors (see below), whose sum is σ = 1860618936. Its totient is φ = 592015032.

The previous prime is 1212221333. The next prime is 1212221357. The reversal of 1212221342 is 2431222121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7047713 + ... + 7047884.

It is an arithmetic number, because the mean of its divisors is an integer number (232577367).

Almost surely, 2^1212221342 is an apocalyptic number.

1212221342 is a deficient number, since it is larger than the sum of its proper divisors (648397594).

1212221342 is a wasteful number, since it uses less digits than its factorization.

1212221342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14095642.

The product of its digits is 384, while the sum is 20.

The square root of 1212221342 is about 34816.9691673471. The cubic root of 1212221342 is about 1066.2539227105.

Adding to 1212221342 its reverse (2431222121), we get a palindrome (3643443463).

The spelling of 1212221342 in words is "one billion, two hundred twelve million, two hundred twenty-one thousand, three hundred forty-two".