1323122223220 has 48 divisors (see below), whose sum is σ = 3179477911680. Its totient is φ = 453072680064.

The previous prime is 1323122223191. The next prime is 1323122223251. The reversal of 1323122223220 is 223222213231.

It is a congruent number.

It is an unprimeable number.

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, 5817450 + ... + 6040609.

It is an arithmetic number, because the mean of its divisors is an integer number (66239123160).

Almost surely, 2^{1323122223220} is an apocalyptic number.

1323122223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323122223220 is an abundant number, since it is smaller than the sum of its proper divisors (1856355688460).

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

1323122223220 is a wasteful number, since it uses less digits than its factorization.

1323122223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11858872 (or 11858870 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1323122223220 its reverse (223222213231), we get a palindrome (1546344436451).

It can be divided in two parts, 132312 and 2223220, that added together give a palindrome (2355532).

The spelling of 1323122223220 in words is "one trillion, three hundred twenty-three billion, one hundred twenty-two million, two hundred twenty-three thousand, two hundred twenty".