1101010101001 has 32 divisors (see below), whose sum is σ = 1151694028800. Its totient is φ = 1051391403840.

The previous prime is 1101010100989. The next prime is 1101010101011. The reversal of 1101010101001 is 1001010101011.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101010101001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101010101011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 805420020 + ... + 805421386.

It is an arithmetic number, because the mean of its divisors is an integer number (35990438400).

Almost surely, 2^{1101010101001} is an apocalyptic number.

It is an amenable number.

1101010101001 is a deficient number, since it is larger than the sum of its proper divisors (50683927799).

1101010101001 is a wasteful number, since it uses less digits than its factorization.

1101010101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 1101010101001 its reverse (1001010101011), we get a palindrome (2102020202012).

The spelling of 1101010101001 in words is "one trillion, one hundred one billion, ten million, one hundred one thousand, one".