20110210989 has 8 divisors (see below), whose sum is σ = 29251216032. Its totient is φ = 12188006640.

The previous prime is 20110210961. The next prime is 20110210999. The reversal of 20110210989 is 98901201102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20110210989 - 2¹³ = 20110202797 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 609400333 = 20110210989 / (2 + 0 + 1 + 1 + 0 + 2 + 1 + 0 + 9 + 8 + 9).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110210919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304700134 + ... + 304700199.

It is an arithmetic number, because the mean of its divisors is an integer number (3656402004).

Almost surely, 2^20110210989 is an apocalyptic number.

It is an amenable number.

20110210989 is a deficient number, since it is larger than the sum of its proper divisors (9141005043).

20110210989 is a wasteful number, since it uses less digits than its factorization.

20110210989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609400347.

The product of its (nonzero) digits is 2592, while the sum is 33.

The spelling of 20110210989 in words is "twenty billion, one hundred ten million, two hundred ten thousand, nine hundred eighty-nine".