13212223100 has 72 divisors (see below), whose sum is σ = 29690547600. Its totient is φ = 5097254400.

The previous prime is 13212223069. The next prime is 13212223117. The reversal of 13212223100 is 132221231.

It is a super-2 number, since 2×13212223100² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3742136 + ... + 3745664.

Almost surely, 2^13212223100 is an apocalyptic number.

13212223100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13212223100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14845273800).

13212223100 is an abundant number, since it is smaller than the sum of its proper divisors (16478324500).

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

13212223100 is a wasteful number, since it uses less digits than its factorization.

13212223100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4863 (or 4856 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13212223100 its reverse (132221231), we get a palindrome (13344444331).

The spelling of 13212223100 in words is "thirteen billion, two hundred twelve million, two hundred twenty-three thousand, one hundred".