13221020212212 has 24 divisors (see below), whose sum is σ = 31091953048576. Its totient is φ = 4372305896448.

The previous prime is 13221020212199. The next prime is 13221020212217. The reversal of 13221020212212 is 21221202012231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221020212217) 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, 4337603533 + ... + 4337606580.

Almost surely, 2^{13221020212212} is an apocalyptic number.

13221020212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13221020212212 is an abundant number, since it is smaller than the sum of its proper divisors (17870932836364).

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

13221020212212 is a wasteful number, since it uses less digits than its factorization.

13221020212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8675210247 (or 8675210245 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 13221020212212 its reverse (21221202012231), we get a palindrome (34442222224443).

The spelling of 13221020212212 in words is "thirteen trillion, two hundred twenty-one billion, twenty million, two hundred twelve thousand, two hundred twelve".