1311202222 has 24 divisors (see below), whose sum is σ = 2214603216. Its totient is φ = 581460000.

The previous prime is 1311202199. The next prime is 1311202247. The reversal of 1311202222 is 2222021131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1311202196 and 1311202205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56154 + ... + 75997.

It is an arithmetic number, because the mean of its divisors is an integer number (92275134).

Almost surely, 2^1311202222 is an apocalyptic number.

1311202222 is a deficient number, since it is larger than the sum of its proper divisors (903400994).

1311202222 is a wasteful number, since it uses less digits than its factorization.

1311202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132216 (or 132205 counting only the distinct ones).

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

The square root of 1311202222 is about 36210.5263977203. The cubic root of 1311202222 is about 1094.5187997074.

Adding to 1311202222 its reverse (2222021131), we get a palindrome (3533223353).

The spelling of 1311202222 in words is "one billion, three hundred eleven million, two hundred two thousand, two hundred twenty-two".