1322100220 has 24 divisors (see below), whose sum is σ = 3173040864. Its totient is φ = 453291456.

The previous prime is 1322100209. The next prime is 1322100257. The reversal of 1322100220 is 220012231.

It is a self number, because there is not a number n which added to its sum of digits gives 1322100220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4721647 + ... + 4721926.

It is an arithmetic number, because the mean of its divisors is an integer number (132210036).

Almost surely, 2^1322100220 is an apocalyptic number.

1322100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322100220 is an abundant number, since it is smaller than the sum of its proper divisors (1850940644).

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

1322100220 is a wasteful number, since it uses less digits than its factorization.

1322100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9443589 (or 9443587 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1322100220 is about 36360.6960879464. The cubic root of 1322100220 is about 1097.5427850548.

Adding to 1322100220 its reverse (220012231), we get a palindrome (1542112451).

The spelling of 1322100220 in words is "one billion, three hundred twenty-two million, one hundred thousand, two hundred twenty".