13212202120 has 128 divisors (see below), whose sum is σ = 34019727840. Its totient is φ = 4574822400.

The previous prime is 13212202099. The next prime is 13212202147. The reversal of 13212202120 is 2120221231.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 364886404 + 12847315716 = 19102^2 + 113346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13212202094 and 13212202103.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2587570 + ... + 2592670.

Almost surely, 2^13212202120 is an apocalyptic number.

13212202120 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 13212202120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17009863920).

13212202120 is an abundant number, since it is smaller than the sum of its proper divisors (20807525720).

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

13212202120 is a wasteful number, since it uses less digits than its factorization.

13212202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5435 (or 5431 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 13212202120 its reverse (2120221231), we get a palindrome (15332423351).

The spelling of 13212202120 in words is "thirteen billion, two hundred twelve million, two hundred two thousand, one hundred twenty".