13212012220 has 24 divisors (see below), whose sum is σ = 30267519408. Its totient is φ = 4804368000.

The previous prime is 13212012217. The next prime is 13212012223. The reversal of 13212012220 is 2221021231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13212012217) and next prime (13212012223).

It is a junction number, because it is equal to n+sod(n) for n = 13212012194 and 13212012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212012223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30027081 + ... + 30027520.

It is an arithmetic number, because the mean of its divisors is an integer number (1261146642).

Almost surely, 2^13212012220 is an apocalyptic number.

13212012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13212012220 is an abundant number, since it is smaller than the sum of its proper divisors (17055507188).

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

13212012220 is a wasteful number, since it uses less digits than its factorization.

13212012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60054621 (or 60054619 counting only the distinct ones).

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

Adding to 13212012220 its reverse (2221021231), we get a palindrome (15433033451).

The spelling of 13212012220 in words is "thirteen billion, two hundred twelve million, twelve thousand, two hundred twenty".