1320131222 has 4 divisors (see below), whose sum is σ = 1980196836. Its totient is φ = 660065610.

The previous prime is 1320131221. The next prime is 1320131227. The reversal of 1320131222 is 2221310231.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1320131222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320131221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330032804 + ... + 330032807.

It is an arithmetic number, because the mean of its divisors is an integer number (495049209).

Almost surely, 2^1320131222 is an apocalyptic number.

1320131222 is a deficient number, since it is larger than the sum of its proper divisors (660065614).

1320131222 is an equidigital number, since it uses as much as digits as its factorization.

1320131222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660065613.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1320131222 is about 36333.6100876310. The cubic root of 1320131222 is about 1096.9976591450.

Adding to 1320131222 its reverse (2221310231), we get a palindrome (3541441453).

The spelling of 1320131222 in words is "one billion, three hundred twenty million, one hundred thirty-one thousand, two hundred twenty-two".