1320221334 has 32 divisors (see below), whose sum is σ = 2660726880. Its totient is φ = 436707072.

The previous prime is 1320221333. The next prime is 1320221351. The reversal of 1320221334 is 4331220231.

It is a self number, because there is not a number n which added to its sum of digits gives 1320221334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320221333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445602 + ... + 448554.

It is an arithmetic number, because the mean of its divisors is an integer number (83147715).

Almost surely, 2^1320221334 is an apocalyptic number.

1320221334 is an abundant number, since it is smaller than the sum of its proper divisors (1340505546).

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

1320221334 is a wasteful number, since it uses less digits than its factorization.

1320221334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1320221334 is about 36334.8501304189. The cubic root of 1320221334 is about 1097.0226188869.

Adding to 1320221334 its reverse (4331220231), we get a palindrome (5651441565).

The spelling of 1320221334 in words is "one billion, three hundred twenty million, two hundred twenty-one thousand, three hundred thirty-four".