100101222100991 has 2 divisors, whose sum is σ = 100101222100992. Its totient is φ = 100101222100990.

The previous prime is 100101222100963. The next prime is 100101222101039. The reversal of 100101222100991 is 199001222101001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100101222100991 - 2¹⁴ = 100101222084607 is a prime.

It is a super-2 number, since 2×100101222100991² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100101222100931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50050611050495 + 50050611050496.

It is an arithmetic number, because the mean of its divisors is an integer number (50050611050496).

Almost surely, 2^{100101222100991} is an apocalyptic number.

100101222100991 is a deficient number, since it is larger than the sum of its proper divisors (1).

100101222100991 is an equidigital number, since it uses as much as digits as its factorization.

100101222100991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 29.

Adding to 100101222100991 its reverse (199001222101001), we get a palindrome (299102444201992).

The spelling of 100101222100991 in words is "one hundred trillion, one hundred one billion, two hundred twenty-two million, one hundred thousand, nine hundred ninety-one".