101111210220989 has 2 divisors, whose sum is σ = 101111210220990. Its totient is φ = 101111210220988.

The previous prime is 101111210220931. The next prime is 101111210221031. The reversal of 101111210220989 is 989022012111101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53101097702500 + 48010112518489 = 7287050^2 + 6928933^2 .

It is a cyclic number.

It is not a de Polignac number, because 101111210220989 - 2¹² = 101111210216893 is a prime.

It is a super-2 number, since 2×101111210220989² (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 (101111210220289) 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, 50555605110494 + 50555605110495.

It is an arithmetic number, because the mean of its divisors is an integer number (50555605110495).

Almost surely, 2^{101111210220989} is an apocalyptic number.

It is an amenable number.

101111210220989 is a deficient number, since it is larger than the sum of its proper divisors (1).

101111210220989 is an equidigital number, since it uses as much as digits as its factorization.

101111210220989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 38.

The spelling of 101111210220989 in words is "one hundred one trillion, one hundred eleven billion, two hundred ten million, two hundred twenty thousand, nine hundred eighty-nine".