11111010010109 has 4 divisors (see below), whose sum is σ = 11382010254300. Its totient is φ = 10840009765920.

The previous prime is 11111010010097. The next prime is 11111010010189. The reversal of 11111010010109 is 90101001011111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6229406990884 + 4881603019225 = 2495878^2 + 2209435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111010010109 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 (11111010010189) 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, 135500122034 + ... + 135500122115.

It is an arithmetic number, because the mean of its divisors is an integer number (2845502563575).

Almost surely, 2^{11111010010109} is an apocalyptic number.

It is an amenable number.

11111010010109 is a deficient number, since it is larger than the sum of its proper divisors (271000244191).

11111010010109 is an equidigital number, since it uses as much as digits as its factorization.

11111010010109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271000244190.

The product of its (nonzero) digits is 9, while the sum is 17.

The spelling of 11111010010109 in words is "eleven trillion, one hundred eleven billion, ten million, ten thousand, one hundred nine".