13212200020 has 12 divisors (see below), whose sum is σ = 27745620084. Its totient is φ = 5284880000.

The previous prime is 13212200003. The next prime is 13212200101. The reversal of 13212200020 is 2000221231.

It can be written as a sum of positive squares in 2 ways, for example, as 4996227856 + 8215972164 = 70684^2 + 90642^2 .

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 3 ways as a sum of consecutive naturals, for example, 330304981 + ... + 330305020.

It is an arithmetic number, because the mean of its divisors is an integer number (2312135007).

Almost surely, 2^13212200020 is an apocalyptic number.

13212200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13212200020 is an abundant number, since it is smaller than the sum of its proper divisors (14533420064).

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

13212200020 is a wasteful number, since it uses less digits than its factorization.

13212200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660610010 (or 660610008 counting only the distinct ones).

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

Adding to 13212200020 its reverse (2000221231), we get a palindrome (15212421251).

The spelling of 13212200020 in words is "thirteen billion, two hundred twelve million, two hundred thousand, twenty".