101111221110091 has 2 divisors, whose sum is σ = 101111221110092. Its totient is φ = 101111221110090.

The previous prime is 101111221110089. The next prime is 101111221110103. The reversal of 101111221110091 is 190011122111101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101111221110091 - 2¹ = 101111221110089 is a prime.

Together with 101111221110089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (101111221110041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555610555045 + 50555610555046.

It is an arithmetic number, because the mean of its divisors is an integer number (50555610555046).

Almost surely, 2^{101111221110091} is an apocalyptic number.

101111221110091 is a deficient number, since it is larger than the sum of its proper divisors (1).

101111221110091 is an equidigital number, since it uses as much as digits as its factorization.

101111221110091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 22.

Adding to 101111221110091 its reverse (190011122111101), we get a palindrome (291122343221192).

The spelling of 101111221110091 in words is "one hundred one trillion, one hundred eleven billion, two hundred twenty-one million, one hundred ten thousand, ninety-one".