1000201000 has 64 divisors (see below), whose sum is σ = 2442286080. Its totient is φ = 382676800.

The previous prime is 1000200997. The next prime is 1000201003. The reversal of 1000201000 is 1020001.

It is an interprime number because it is at equal distance from previous prime (1000200997) and next prime (1000201003).

It is a super-3 number, since 3×1000201000³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (4).

It is not an unprimeable number, because it can be changed into a prime (1000201003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1257 + ... + 44743.

It is an arithmetic number, because the mean of its divisors is an integer number (38160720).

Almost surely, 2^1000201000 is an apocalyptic number.

1000201000 is a gapful number since it is divisible by the number (10) 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 1000201000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1221143040).

1000201000 is an abundant number, since it is smaller than the sum of its proper divisors (1442085080).

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

1000201000 is a wasteful number, since it uses less digits than its factorization.

1000201000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43531 (or 43517 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 1000201000 is about 31625.9545310493. The cubic root of 1000201000 is about 1000.0669955115.

Adding to 1000201000 its reverse (1020001), we get a palindrome (1001221001).

The spelling of 1000201000 in words is "one billion, two hundred one thousand".