1320211136 has 28 divisors (see below), whose sum is σ = 2704307520. Its totient is φ = 638810880.

The previous prime is 1320211117. The next prime is 1320211157. The reversal of 1320211136 is 6311120231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330731 + ... + 334698.

Almost surely, 2^1320211136 is an apocalyptic number.

1320211136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1320211136 is an abundant number, since it is smaller than the sum of its proper divisors (1384096384).

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

1320211136 is an equidigital number, since it uses as much as digits as its factorization.

1320211136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665472 (or 665462 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1320211136 is about 36334.7097965568. The cubic root of 1320211136 is about 1097.0197942430.

Adding to 1320211136 its reverse (6311120231), we get a palindrome (7631331367).

The spelling of 1320211136 in words is "one billion, three hundred twenty million, two hundred eleven thousand, one hundred thirty-six".