320402212212 has 12 divisors (see below), whose sum is σ = 747605161856. Its totient is φ = 106800737400.

The previous prime is 320402212189. The next prime is 320402212219. The reversal of 320402212212 is 212212204023.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320402212219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13350092164 + ... + 13350092187.

Almost surely, 2^320402212212 is an apocalyptic number.

It is an amenable number.

320402212212 is an abundant number, since it is smaller than the sum of its proper divisors (427202949644).

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

320402212212 is a wasteful number, since it uses less digits than its factorization.

320402212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26700184358 (or 26700184356 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 320402212212 its reverse (212212204023), we get a palindrome (532614416235).

The spelling of 320402212212 in words is "three hundred twenty billion, four hundred two million, two hundred twelve thousand, two hundred twelve".