2189121833091 has 8 divisors (see below), whose sum is σ = 2926107987984. Its totient is φ = 1455775116800.

The previous prime is 2189121833089. The next prime is 2189121833161. The reversal of 2189121833091 is 1903381219812.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2189121833091 - 2¹ = 2189121833089 is a prime.

It is a super-2 number, since 2×2189121833091² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2189121833091.

It is not an unprimeable number, because it can be changed into a prime (2189121833021) 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, 909858246 + ... + 909860651.

It is an arithmetic number, because the mean of its divisors is an integer number (365763498498).

Almost surely, 2^{2189121833091} is an apocalyptic number.

2189121833091 is a deficient number, since it is larger than the sum of its proper divisors (736986154893).

2189121833091 is a wasteful number, since it uses less digits than its factorization.

2189121833091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819719301.

The product of its (nonzero) digits is 186624, while the sum is 48.

The spelling of 2189121833091 in words is "two trillion, one hundred eighty-nine billion, one hundred twenty-one million, eight hundred thirty-three thousand, ninety-one".