1001200010 has 16 divisors (see below), whose sum is σ = 1803326976. Its totient is φ = 400220688.

The previous prime is 1001200009. The next prime is 1001200019. The reversal of 1001200010 is 100021001.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1001199967 and 1001200003.

It is not an unprimeable number, because it can be changed into a prime (1001200019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15794 + ... + 47453.

It is an arithmetic number, because the mean of its divisors is an integer number (112707936).

Almost surely, 2^1001200010 is an apocalyptic number.

1001200010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001200010 is a deficient number, since it is larger than the sum of its proper divisors (802126966).

1001200010 is a wasteful number, since it uses less digits than its factorization.

1001200010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64837.

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

The square root of 1001200010 is about 31641.7447369768. The cubic root of 1001200010 is about 1000.3998434373.

Adding to 1001200010 its reverse (100021001), we get a palindrome (1101221011).

The spelling of 1001200010 in words is "one billion, one million, two hundred thousand, ten".