101220109999 has 2 divisors, whose sum is σ = 101220110000. Its totient is φ = 101220109998.

The previous prime is 101220109997. The next prime is 101220110039. The reversal of 101220109999 is 999901022101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101220109999 - 2¹ = 101220109997 is a prime.

Together with 101220109997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101220109997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610054999 + 50610055000.

It is an arithmetic number, because the mean of its divisors is an integer number (50610055000).

Almost surely, 2^101220109999 is an apocalyptic number.

101220109999 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220109999 is an equidigital number, since it uses as much as digits as its factorization.

101220109999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 43.

The spelling of 101220109999 in words is "one hundred one billion, two hundred twenty million, one hundred nine thousand, nine hundred ninety-nine".