201213053340 has 96 divisors (see below), whose sum is σ = 607277669376. Its totient is φ = 49485047040.

The previous prime is 201213053339. The next prime is 201213053369. The reversal of 201213053340 is 43350312102.

It is a self number, because there is not a number n which added to its sum of digits gives 201213053340.

It is a congruent number.

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, 761085 + ... + 990795.

It is an arithmetic number, because the mean of its divisors is an integer number (6325809056).

Almost surely, 2^201213053340 is an apocalyptic number.

201213053340 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 201213053340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303638834688).

201213053340 is an abundant number, since it is smaller than the sum of its proper divisors (406064616036).

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

201213053340 is a wasteful number, since it uses less digits than its factorization.

201213053340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230859 (or 230857 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 201213053340 its reverse (43350312102), we get a palindrome (244563365442).

The spelling of 201213053340 in words is "two hundred one billion, two hundred thirteen million, fifty-three thousand, three hundred forty".