1000101081 has 32 divisors (see below), whose sum is σ = 1609436160. Its totient is φ = 539631936.

The previous prime is 1000101079. The next prime is 1000101097. The reversal of 1000101081 is 1801010001.

It is a happy number.

It is not a de Polignac number, because 1000101081 - 2¹ = 1000101079 is a prime.

It is a super-2 number, since 2×1000101081² = 2000404344434737122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1000101281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122530 + ... + 130436.

It is an arithmetic number, because the mean of its divisors is an integer number (50294880).

Almost surely, 2^1000101081 is an apocalyptic number.

It is an amenable number.

1000101081 is a deficient number, since it is larger than the sum of its proper divisors (609335079).

1000101081 is a wasteful number, since it uses less digits than its factorization.

1000101081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8253.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1000101081 is about 31624.3747922390. The cubic root of 1000101081 is about 1000.0336925315.

Adding to 1000101081 its reverse (1801010001), we get a palindrome (2801111082).

The spelling of 1000101081 in words is "one billion, one hundred one thousand, eighty-one".