213133322221212 has 24 divisors (see below), whose sum is σ = 497315542147200. Its totient is φ = 71043804031216.

The previous prime is 213133322221177. The next prime is 213133322221217. The reversal of 213133322221212 is 212122223331312.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 213133322221212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213133322221217) 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, 78192912 + ... + 80872727.

It is an arithmetic number, because the mean of its divisors is an integer number (20721480922800).

Almost surely, 2^{213133322221212} is an apocalyptic number.

It is an amenable number.

213133322221212 is an abundant number, since it is smaller than the sum of its proper divisors (284182219925988).

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

213133322221212 is a wasteful number, since it uses less digits than its factorization.

213133322221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159177305 (or 159177303 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

Adding to 213133322221212 its reverse (212122223331312), we get a palindrome (425255545552524).

The spelling of 213133322221212 in words is "two hundred thirteen trillion, one hundred thirty-three billion, three hundred twenty-two million, two hundred twenty-one thousand, two hundred twelve".