101022209989 has 2 divisors, whose sum is σ = 101022209990. Its totient is φ = 101022209988.

The previous prime is 101022209957. The next prime is 101022210011. The reversal of 101022209989 is 989902220101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100444624900 + 577585089 = 316930^2 + 24033^2 .

It is an emirp because it is prime and its reverse (989902220101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101022209989 - 2⁵ = 101022209957 is a prime.

It is a super-2 number, since 2×101022209989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101022209909) 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, 50511104994 + 50511104995.

It is an arithmetic number, because the mean of its divisors is an integer number (50511104995).

Almost surely, 2^101022209989 is an apocalyptic number.

It is an amenable number.

101022209989 is a deficient number, since it is larger than the sum of its proper divisors (1).

101022209989 is an equidigital number, since it uses as much as digits as its factorization.

101022209989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 101022209989 in words is "one hundred one billion, twenty-two million, two hundred nine thousand, nine hundred eighty-nine".