1001001101 has 16 divisors (see below), whose sum is σ = 1074221568. Its totient is φ = 930441600.

The previous prime is 1001001061. The next prime is 1001001119. The reversal of 1001001101 is 1011001001.

It is a cyclic number.

It is not a de Polignac number, because 1001001101 - 2⁶ = 1001001037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001001151) 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, 253595 + ... + 257511.

It is an arithmetic number, because the mean of its divisors is an integer number (67138848).

Almost surely, 2^1001001101 is an apocalyptic number.

It is an amenable number.

1001001101 is a deficient number, since it is larger than the sum of its proper divisors (73220467).

1001001101 is a wasteful number, since it uses less digits than its factorization.

1001001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4252.

The product of its (nonzero) digits is 1, while the sum is 5.

The square root of 1001001101 is about 31638.6014387488. The cubic root of 1001001101 is about 1000.3335890393. Note that the first 3 decimals are identical.

Adding to 1001001101 its reverse (1011001001), we get a palindrome (2012002102).

It can be divided in two parts, 1001001 and 101, that multiplied together give a palindrome (101101101).

The spelling of 1001001101 in words is "one billion, one million, one thousand, one hundred one".