201213122342320 has 80 divisors (see below), whose sum is σ = 510370263275040. Its totient is φ = 73165452339200.

The previous prime is 201213122342249. The next prime is 201213122342377. The reversal of 201213122342320 is 23243221312102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17236476 + ... + 26448484.

It is an arithmetic number, because the mean of its divisors is an integer number (6379628290938).

Almost surely, 2^{201213122342320} is an apocalyptic number.

201213122342320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201213122342320 is an abundant number, since it is smaller than the sum of its proper divisors (309157140932720).

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

201213122342320 is a wasteful number, since it uses less digits than its factorization.

201213122342320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9236854 (or 9236848 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 201213122342320 its reverse (23243221312102), we get a palindrome (224456343654422).

The spelling of 201213122342320 in words is "two hundred one trillion, two hundred thirteen billion, one hundred twenty-two million, three hundred forty-two thousand, three hundred twenty".