1311200222 has 16 divisors (see below), whose sum is σ = 2086128000. Its totient is φ = 616351320.

The previous prime is 1311200173. The next prime is 1311200227. The reversal of 1311200222 is 2220021131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1311200197 and 1311200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311200227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126722 + ... + 136677.

It is an arithmetic number, because the mean of its divisors is an integer number (130383000).

Almost surely, 2^1311200222 is an apocalyptic number.

1311200222 is a deficient number, since it is larger than the sum of its proper divisors (774927778).

1311200222 is a wasteful number, since it uses less digits than its factorization.

1311200222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263551.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1311200222 is about 36210.4987814308. The cubic root of 1311200222 is about 1094.5182432108.

Adding to 1311200222 its reverse (2220021131), we get a palindrome (3531221353).

The spelling of 1311200222 in words is "one billion, three hundred eleven million, two hundred thousand, two hundred twenty-two".