109218921911 has 8 divisors (see below), whose sum is σ = 119906820624. Its totient is φ = 98657507520.

The previous prime is 109218921907. The next prime is 109218921913. The reversal of 109218921911 is 119129812901.

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 109218921911 - 2² = 109218921907 is a prime.

It is a super-2 number, since 2×109218921911² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109218921913) 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, 31619270 + ... + 31622723.

It is an arithmetic number, because the mean of its divisors is an integer number (14988352578).

Almost surely, 2^109218921911 is an apocalyptic number.

109218921911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

109218921911 is a deficient number, since it is larger than the sum of its proper divisors (10687898713).

109218921911 is a wasteful number, since it uses less digits than its factorization.

109218921911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63242161.

The product of its (nonzero) digits is 23328, while the sum is 44.

The spelling of 109218921911 in words is "one hundred nine billion, two hundred eighteen million, nine hundred twenty-one thousand, nine hundred eleven".