110201989 has 2 divisors, whose sum is σ = 110201990. Its totient is φ = 110201988.

The previous prime is 110201977. The next prime is 110202013. The reversal of 110201989 is 989102011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79032100 + 31169889 = 8890^2 + 5583^2 .

It is an emirp because it is prime and its reverse (989102011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110201989 is a prime.

It is a super-2 number, since 2×110201989² = 24288956759112242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 110201989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110201489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55100994 + 55100995.

It is an arithmetic number, because the mean of its divisors is an integer number (55100995).

Almost surely, 2^110201989 is an apocalyptic number.

It is an amenable number.

110201989 is a deficient number, since it is larger than the sum of its proper divisors (1).

110201989 is an equidigital number, since it uses as much as digits as its factorization.

110201989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 110201989 is about 10497.7135129513. The cubic root of 110201989 is about 479.4350833796.

The spelling of 110201989 in words is "one hundred ten million, two hundred one thousand, nine hundred eighty-nine".