201000002000 has 320 divisors, whose sum is σ = 566965521408. Its totient is φ = 67495680000.

The previous prime is 201000001997. The next prime is 201000002003. The reversal of 201000002000 is 200000102.

It is an interprime number because it is at equal distance from previous prime (201000001997) and next prime (201000002003).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000002003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 318541685 + ... + 318542315.

Almost surely, 2^201000002000 is an apocalyptic number.

201000002000 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 201000002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283482760704).

201000002000 is an abundant number, since it is smaller than the sum of its proper divisors (365965519408).

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

201000002000 is a wasteful number, since it uses less digits than its factorization.

201000002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

Adding to 201000002000 its reverse (200000102), we get a palindrome (201200002102).

The spelling of 201000002000 in words is "two hundred one billion, two thousand".