1311210222 has 16 divisors (see below), whose sum is σ = 2997052032. Its totient is φ = 374631480.

The previous prime is 1311210169. The next prime is 1311210239. The reversal of 1311210222 is 2220121131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15609604 + ... + 15609687.

It is an arithmetic number, because the mean of its divisors is an integer number (187315752).

Almost surely, 2^1311210222 is an apocalyptic number.

1311210222 is an abundant number, since it is smaller than the sum of its proper divisors (1685841810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311210222 is a wasteful number, since it uses less digits than its factorization.

1311210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31219303.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1311210222 is about 36210.6368626679. The cubic root of 1311210222 is about 1094.5210256881.

Adding to 1311210222 its reverse (2220121131), we get a palindrome (3531331353).

The spelling of 1311210222 in words is "one billion, three hundred eleven million, two hundred ten thousand, two hundred twenty-two".