1220321334 has 32 divisors (see below), whose sum is σ = 2535366240. Its totient is φ = 391104000.

The previous prime is 1220321329. The next prime is 1220321357. The reversal of 1220321334 is 4331230221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220321334.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 27384 + ... + 56484.

It is an arithmetic number, because the mean of its divisors is an integer number (79230195).

Almost surely, 2^1220321334 is an apocalyptic number.

1220321334 is an abundant number, since it is smaller than the sum of its proper divisors (1315044906).

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

1220321334 is a wasteful number, since it uses less digits than its factorization.

1220321334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29376.

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

The square root of 1220321334 is about 34933.0979731257. The cubic root of 1220321334 is about 1068.6235347367.

Adding to 1220321334 its reverse (4331230221), we get a palindrome (5551551555).

The spelling of 1220321334 in words is "one billion, two hundred twenty million, three hundred twenty-one thousand, three hundred thirty-four".