1106128255821 has 8 divisors (see below), whose sum is σ = 1525694146080. Its totient is φ = 711990601392.

The previous prime is 1106128255759. The next prime is 1106128255891. The reversal of 1106128255821 is 1285528216011.

It is a happy number.

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

It is not a de Polignac number, because 1106128255821 - 2⁷ = 1106128255693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1106128255891) 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, 6357058855 + ... + 6357059028.

It is an arithmetic number, because the mean of its divisors is an integer number (190711768260).

Almost surely, 2^{1106128255821} is an apocalyptic number.

It is an amenable number.

1106128255821 is a deficient number, since it is larger than the sum of its proper divisors (419565890259).

1106128255821 is a wasteful number, since it uses less digits than its factorization.

1106128255821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12714117915.

The product of its (nonzero) digits is 76800, while the sum is 42.

The spelling of 1106128255821 in words is "one trillion, one hundred six billion, one hundred twenty-eight million, two hundred fifty-five thousand, eight hundred twenty-one".