201011331330 has 96 divisors (see below), whose sum is σ = 527601185280. Its totient is φ = 53095409280.

The previous prime is 201011331329. The next prime is 201011331331. The reversal of 201011331330 is 33133110102.

It is a happy number.

201011331330 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 1 + 1 + 331 + 330 = 666.

It is an interprime number because it is at equal distance from previous prime (201011331329) and next prime (201011331331).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201011331331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4195651 + ... + 4243289.

It is an arithmetic number, because the mean of its divisors is an integer number (5495845680).

Almost surely, 2^201011331330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201011331330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263800592640).

201011331330 is an abundant number, since it is smaller than the sum of its proper divisors (326589853950).

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

201011331330 is a wasteful number, since it uses less digits than its factorization.

201011331330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48096 (or 48093 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 201011331330 its reverse (33133110102), we get a palindrome (234144441432).

The spelling of 201011331330 in words is "two hundred one billion, eleven million, three hundred thirty-one thousand, three hundred thirty".