11211011001109 has 2 divisors, whose sum is σ = 11211011001110. Its totient is φ = 11211011001108.

The previous prime is 11211011001031. The next prime is 11211011001161. The reversal of 11211011001109 is 90110011011211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8032956057009 + 3178054944100 = 2834247^2 + 1782710^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211011001109 - 2¹³ = 11211010992917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211011001199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605505500554 + 5605505500555.

It is an arithmetic number, because the mean of its divisors is an integer number (5605505500555).

Almost surely, 2^{11211011001109} is an apocalyptic number.

It is an amenable number.

11211011001109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211011001109 is an equidigital number, since it uses as much as digits as its factorization.

11211011001109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 19.

The spelling of 11211011001109 in words is "eleven trillion, two hundred eleven billion, eleven million, one thousand, one hundred nine".