11221161895917 has 12 divisors (see below), whose sum is σ = 16213330652064. Its totient is φ = 7478473509000.

The previous prime is 11221161895913. The next prime is 11221161895927. The reversal of 11221161895917 is 71959816112211.

11221161895917 is a `hidden beast` number, since 1 + 1 + 2 + 2 + 1 + 1 + 618 + 9 + 5 + 9 + 17 = 666.

It is not a de Polignac number, because 11221161895917 - 2² = 11221161895913 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221161895913) 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, 191726473 + ... + 191784990.

It is an arithmetic number, because the mean of its divisors is an integer number (1351110887672).

Almost surely, 2^{11221161895917} is an apocalyptic number.

It is an amenable number.

11221161895917 is a deficient number, since it is larger than the sum of its proper divisors (4992168756147).

11221161895917 is a wasteful number, since it uses less digits than its factorization.

11221161895917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383514720 (or 383514717 counting only the distinct ones).

The product of its digits is 544320, while the sum is 54.

The spelling of 11221161895917 in words is "eleven trillion, two hundred twenty-one billion, one hundred sixty-one million, eight hundred ninety-five thousand, nine hundred seventeen".