201000011000 has 64 divisors (see below), whose sum is σ = 470617037280. Its totient is φ = 80352652800.

The previous prime is 201000010997. The next prime is 201000011021. The reversal of 201000011000 is 110000102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1664672 + ... + 1781328.

Almost surely, 2^201000011000 is an apocalyptic number.

201000011000 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 201000011000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235308518640).

201000011000 is an abundant number, since it is smaller than the sum of its proper divisors (269617026280).

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

201000011000 is a wasteful number, since it uses less digits than its factorization.

201000011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118401 (or 118387 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

Adding to 201000011000 its reverse (110000102), we get a palindrome (201110011102).

The spelling of 201000011000 in words is "two hundred one billion, eleven thousand".