101222211091 has 2 divisors, whose sum is σ = 101222211092. Its totient is φ = 101222211090.

The previous prime is 101222211089. The next prime is 101222211229. The reversal of 101222211091 is 190112222101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101222211091 - 2¹ = 101222211089 is a prime.

Together with 101222211089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (101222211061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50611105545 + 50611105546.

It is an arithmetic number, because the mean of its divisors is an integer number (50611105546).

Almost surely, 2^101222211091 is an apocalyptic number.

101222211091 is a deficient number, since it is larger than the sum of its proper divisors (1).

101222211091 is an equidigital number, since it uses as much as digits as its factorization.

101222211091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 101222211091 its reverse (190112222101), we get a palindrome (291334433192).

The spelling of 101222211091 in words is "one hundred one billion, two hundred twenty-two million, two hundred eleven thousand, ninety-one".