1322221420 has 48 divisors (see below), whose sum is σ = 3028152960. Its totient is φ = 482017536.

The previous prime is 1322221399. The next prime is 1322221451. The reversal of 1322221420 is 241222231.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11647 + ... + 52726.

It is an arithmetic number, because the mean of its divisors is an integer number (63086520).

Almost surely, 2^1322221420 is an apocalyptic number.

1322221420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322221420 is an abundant number, since it is smaller than the sum of its proper divisors (1705931540).

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

1322221420 is a wasteful number, since it uses less digits than its factorization.

1322221420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64474 (or 64472 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1322221420 is about 36362.3626845121. The cubic root of 1322221420 is about 1097.5763221294.

Adding to 1322221420 its reverse (241222231), we get a palindrome (1563443651).

The spelling of 1322221420 in words is "one billion, three hundred twenty-two million, two hundred twenty-one thousand, four hundred twenty".