201001120011000 has 384 divisors, whose sum is σ = 698491252892160. Its totient is φ = 52095902976000.

The previous prime is 201001120010969. The next prime is 201001120011151. The reversal of 201001120011000 is 110021100102.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 311698905 + ... + 312343095.

It is an arithmetic number, because the mean of its divisors is an integer number (1818987637740).

Almost surely, 2^{201001120011000} is an apocalyptic number.

201001120011000 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 201001120011000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349245626446080).

201001120011000 is an abundant number, since it is smaller than the sum of its proper divisors (497490132881160).

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

201001120011000 is a wasteful number, since it uses less digits than its factorization.

201001120011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645192 (or 645175 counting only the distinct ones).

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

Adding to 201001120011000 its reverse (110021100102), we get a palindrome (201111141111102).

The spelling of 201001120011000 in words is "two hundred one trillion, one billion, one hundred twenty million, eleven thousand".