11011211002091 has 2 divisors, whose sum is σ = 11011211002092. Its totient is φ = 11011211002090.

The previous prime is 11011211002073. The next prime is 11011211002111. The reversal of 11011211002091 is 19020011211011.

It is an a-pointer prime, because the next prime (11011211002111) can be obtained adding 11011211002091 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11011211002091 - 2¹⁰ = 11011211001067 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011211062091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505605501045 + 5505605501046.

It is an arithmetic number, because the mean of its divisors is an integer number (5505605501046).

Almost surely, 2^{11011211002091} is an apocalyptic number.

11011211002091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011211002091 is an equidigital number, since it uses as much as digits as its factorization.

11011211002091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 11011211002091 in words is "eleven trillion, eleven billion, two hundred eleven million, two thousand, ninety-one".