1010101101091 has 4 divisors (see below), whose sum is σ = 1010103539632. Its totient is φ = 1010098662552.

The previous prime is 1010101101089. The next prime is 1010101101167. The reversal of 1010101101091 is 1901011010101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1010101101091 - 2¹ = 1010101101089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010101401091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425820 + ... + 1483753.

It is an arithmetic number, because the mean of its divisors is an integer number (252525884908).

Almost surely, 2^{1010101101091} is an apocalyptic number.

1010101101091 is a deficient number, since it is larger than the sum of its proper divisors (2438541).

1010101101091 is an equidigital number, since it uses as much as digits as its factorization.

1010101101091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438540.

The product of its (nonzero) digits is 9, while the sum is 16.

Adding to 1010101101091 its reverse (1901011010101), we get a palindrome (2911112111192).

The spelling of 1010101101091 in words is "one trillion, ten billion, one hundred one million, one hundred one thousand, ninety-one".