111102021021109 has 4 divisors (see below), whose sum is σ = 111145573364320. Its totient is φ = 111058468677900.

The previous prime is 111102021021091. The next prime is 111102021021137. The reversal of 111102021021109 is 901120120201111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111102021021109 - 2⁷ = 111102021020981 is a prime.

It is a super-2 number, since 2×111102021021109² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111102021021109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102021021149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21776167779 + ... + 21776172880.

It is an arithmetic number, because the mean of its divisors is an integer number (27786393341080).

Almost surely, 2^{111102021021109} is an apocalyptic number.

It is an amenable number.

111102021021109 is a deficient number, since it is larger than the sum of its proper divisors (43552343211).

111102021021109 is an equidigital number, since it uses as much as digits as its factorization.

111102021021109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43552343210.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 111102021021109 in words is "one hundred eleven trillion, one hundred two billion, twenty-one million, twenty-one thousand, one hundred nine".