201011101200 has 720 divisors, whose sum is σ = 885449101440. Its totient is φ = 42408437760.

The previous prime is 201011101199. The next prime is 201011101253. The reversal of 201011101200 is 2101110102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 12768534 + ... + 12784266.

Almost surely, 2^201011101200 is an apocalyptic number.

201011101200 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 201011101200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442724550720).

201011101200 is an abundant number, since it is smaller than the sum of its proper divisors (684438000240).

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

201011101200 is a wasteful number, since it uses less digits than its factorization.

201011101200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15793 (or 15763 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 201011101200 its reverse (2101110102), we get a palindrome (203112211302).

The spelling of 201011101200 in words is "two hundred one billion, eleven million, one hundred one thousand, two hundred".