89121211101 has 12 divisors (see below), whose sum is σ = 138632995228. Its totient is φ = 54843822144.

The previous prime is 89121211099. The next prime is 89121211133. The reversal of 89121211101 is 10111212198.

It can be written as a sum of positive squares in 2 ways, for example, as 25632330201 + 63488880900 = 160101^2 + 251970^2 .

It is not a de Polignac number, because 89121211101 - 2¹ = 89121211099 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89121211301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 380859760 + ... + 380859993.

Almost surely, 2^89121211101 is an apocalyptic number.

It is an amenable number.

89121211101 is a deficient number, since it is larger than the sum of its proper divisors (49511784127).

89121211101 is a wasteful number, since it uses less digits than its factorization.

89121211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761719772 (or 761719769 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 27.

Adding to 89121211101 its reverse (10111212198), we get a palindrome (99232423299).

The spelling of 89121211101 in words is "eighty-nine billion, one hundred twenty-one million, two hundred eleven thousand, one hundred one".