1320638222 has 8 divisors (see below), whose sum is σ = 1986476400. Its totient is φ = 658479424.

The previous prime is 1320638213. The next prime is 1320638261. The reversal of 1320638222 is 2228360231.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918947 + ... + 920382.

It is an arithmetic number, because the mean of its divisors is an integer number (248309550).

Almost surely, 2^1320638222 is an apocalyptic number.

1320638222 is a deficient number, since it is larger than the sum of its proper divisors (665838178).

1320638222 is a wasteful number, since it uses less digits than its factorization.

1320638222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839690.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1320638222 is about 36340.5864289502. The cubic root of 1320638222 is about 1097.1380761527.

Adding to 1320638222 its reverse (2228360231), we get a palindrome (3548998453).

The spelling of 1320638222 in words is "one billion, three hundred twenty million, six hundred thirty-eight thousand, two hundred twenty-two".