101222109999991 has 2 divisors, whose sum is σ = 101222109999992. Its totient is φ = 101222109999990.

The previous prime is 101222109999961. The next prime is 101222110000013. The reversal of 101222109999991 is 199999901222101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101222109999991 - 2³⁷ = 101084671046519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101222109999961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50611054999995 + 50611054999996.

It is an arithmetic number, because the mean of its divisors is an integer number (50611054999996).

Almost surely, 2^{101222109999991} is an apocalyptic number.

101222109999991 is a deficient number, since it is larger than the sum of its proper divisors (1).

101222109999991 is an equidigital number, since it uses as much as digits as its factorization.

101222109999991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4251528, while the sum is 64.

The spelling of 101222109999991 in words is "one hundred one trillion, two hundred twenty-two billion, one hundred nine million, nine hundred ninety-nine thousand, nine hundred ninety-one".