1312223222 has 8 divisors (see below), whose sum is σ = 1968735576. Its totient is φ = 655978032.

The previous prime is 1312223203. The next prime is 1312223243. The reversal of 1312223222 is 2223222131.

It is a happy number.

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

It is a super-2 number, since 2×1312223222² = 3443859568712122568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312223194 and 1312223203.

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, 54023 + ... + 74450.

It is an arithmetic number, because the mean of its divisors is an integer number (246091947).

Almost surely, 2^1312223222 is an apocalyptic number.

1312223222 is a deficient number, since it is larger than the sum of its proper divisors (656512354).

1312223222 is a wasteful number, since it uses less digits than its factorization.

1312223222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133582.

The product of its digits is 576, while the sum is 20.

The square root of 1312223222 is about 36224.6217647611. The cubic root of 1312223222 is about 1094.8028173679.

Adding to 1312223222 its reverse (2223222131), we get a palindrome (3535445353).

The spelling of 1312223222 in words is "one billion, three hundred twelve million, two hundred twenty-three thousand, two hundred twenty-two".