2111102011091 has 2 divisors, whose sum is σ = 2111102011092. Its totient is φ = 2111102011090.

The previous prime is 2111102011019. The next prime is 2111102011141. The reversal of 2111102011091 is 1901102011112.

Together with previous prime (2111102011019) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2111102011091 - 2¹⁸ = 2111101748947 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111102011691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055551005545 + 1055551005546.

It is an arithmetic number, because the mean of its divisors is an integer number (1055551005546).

Almost surely, 2^{2111102011091} is an apocalyptic number.

2111102011091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111102011091 is an equidigital number, since it uses as much as digits as its factorization.

2111102011091 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 2111102011091 in words is "two trillion, one hundred eleven billion, one hundred two million, eleven thousand, ninety-one".