201123224340 has 192 divisors, whose sum is σ = 610655136000. Its totient is φ = 49286651904.

The previous prime is 201123224327. The next prime is 201123224369. The reversal of 201123224340 is 43422321102.

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 201123224340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14207586 + ... + 14221734.

It is an arithmetic number, because the mean of its divisors is an integer number (3180495500).

Almost surely, 2^201123224340 is an apocalyptic number.

201123224340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201123224340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305327568000).

201123224340 is an abundant number, since it is smaller than the sum of its proper divisors (409531911660).

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

201123224340 is a wasteful number, since it uses less digits than its factorization.

201123224340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14554 (or 14552 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 201123224340 its reverse (43422321102), we get a palindrome (244545545442).

The spelling of 201123224340 in words is "two hundred one billion, one hundred twenty-three million, two hundred twenty-four thousand, three hundred forty".