521330222302212 has 96 divisors (see below), whose sum is σ = 1414728399974400. Its totient is φ = 148209641851392.

The previous prime is 521330222302207. The next prime is 521330222302247. The reversal of 521330222302212 is 212203222033125.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 521330222302212.

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, 2923870012 + ... + 2924048307.

It is an arithmetic number, because the mean of its divisors is an integer number (14736754166400).

Almost surely, 2^{521330222302212} is an apocalyptic number.

It is an amenable number.

521330222302212 is an abundant number, since it is smaller than the sum of its proper divisors (893398177672188).

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

521330222302212 is a wasteful number, since it uses less digits than its factorization.

521330222302212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5847918385 (or 5847918383 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 521330222302212 its reverse (212203222033125), we get a palindrome (733533444335337).

The spelling of 521330222302212 in words is "five hundred twenty-one trillion, three hundred thirty billion, two hundred twenty-two million, three hundred two thousand, two hundred twelve".