221110772561109 has 12 divisors (see below), whose sum is σ = 333268410817056. Its totient is φ = 140998173806952.

The previous prime is 221110772561089. The next prime is 221110772561141. The reversal of 221110772561109 is 901165277011122.

221110772561109 is a `hidden beast` number, since 2 + 2 + 1 + 1 + 1 + 0 + 7 + 7 + 25 + 611 + 0 + 9 = 666.

It is not a de Polignac number, because 221110772561109 - 2⁷ = 221110772560981 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 (221110772561309) 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, 534083991487 + ... + 534083991900.

It is an arithmetic number, because the mean of its divisors is an integer number (27772367568088).

Almost surely, 2^{221110772561109} is an apocalyptic number.

It is an amenable number.

221110772561109 is a deficient number, since it is larger than the sum of its proper divisors (112157638255947).

221110772561109 is a wasteful number, since it uses less digits than its factorization.

221110772561109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068167983416 (or 1068167983413 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 45.

The spelling of 221110772561109 in words is "two hundred twenty-one trillion, one hundred ten billion, seven hundred seventy-two million, five hundred sixty-one thousand, one hundred nine".