11050155155421 has 6 divisors (see below), whose sum is σ = 15961335224510. Its totient is φ = 7366770103608.

The previous prime is 11050155155401. The next prime is 11050155155423. The reversal of 11050155155421 is 12455155105011.

11050155155421 is a `hidden beast` number, since 1 + 1 + 0 + 50 + 1 + 5 + 51 + 554 + 2 + 1 = 666.

11050155155421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9220666268025 + 1829488887396 = 3036555^2 + 1352586^2 .

It is not a de Polignac number, because 11050155155421 - 2⁶ = 11050155155357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11050155155423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 613897508626 + ... + 613897508643.

Almost surely, 2^{11050155155421} is an apocalyptic number.

It is an amenable number.

11050155155421 is a deficient number, since it is larger than the sum of its proper divisors (4911180069089).

11050155155421 is a wasteful number, since it uses less digits than its factorization.

11050155155421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227795017275 (or 1227795017272 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 36.

The spelling of 11050155155421 in words is "eleven trillion, fifty billion, one hundred fifty-five million, one hundred fifty-five thousand, four hundred twenty-one".