1312201222 has 8 divisors (see below), whose sum is σ = 2036174400. Its totient is φ = 633476424.

The previous prime is 1312201217. The next prime is 1312201223. The reversal of 1312201222 is 2221022131.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1312201196 and 1312201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312201223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11312022 + ... + 11312137.

It is an arithmetic number, because the mean of its divisors is an integer number (254521800).

Almost surely, 2^1312201222 is an apocalyptic number.

1312201222 is a deficient number, since it is larger than the sum of its proper divisors (723973178).

1312201222 is a wasteful number, since it uses less digits than its factorization.

1312201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22624190.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1312201222 is about 36224.3181026227. The cubic root of 1312201222 is about 1094.7966990500.

Adding to 1312201222 its reverse (2221022131), we get a palindrome (3533223353).

The spelling of 1312201222 in words is "one billion, three hundred twelve million, two hundred one thousand, two hundred twenty-two".