1229112891089 has 16 divisors (see below), whose sum is σ = 1301202619200. Its totient is φ = 1159009406016.

The previous prime is 1229112891037. The next prime is 1229112891107. The reversal of 1229112891089 is 9801982119221.

It is a cyclic number.

It is not a de Polignac number, because 1229112891089 - 2⁴⁰ = 129601263313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1229112891089.

It is not an unprimeable number, because it can be changed into a prime (1229112899089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13157942 + ... + 13251024.

It is an arithmetic number, because the mean of its divisors is an integer number (81325163700).

Almost surely, 2^{1229112891089} is an apocalyptic number.

It is an amenable number.

1229112891089 is a deficient number, since it is larger than the sum of its proper divisors (72089728111).

1229112891089 is a wasteful number, since it uses less digits than its factorization.

1229112891089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103744.

The product of its (nonzero) digits is 373248, while the sum is 53.

The spelling of 1229112891089 in words is "one trillion, two hundred twenty-nine billion, one hundred twelve million, eight hundred ninety-one thousand, eighty-nine".