111021120100105 has 8 divisors (see below), whose sum is σ = 133254995904072. Its totient is φ = 88797128224128.

The previous prime is 111021120099847. The next prime is 111021120100123. The reversal of 111021120100105 is 501001021120111.

It can be written as a sum of positive squares in 4 ways, for example, as 83348354539024 + 27672765561081 = 9129532^2 + 5260491^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111021120100105 is a prime.

It is a super-2 number, since 2×111021120100105² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2470957284 + ... + 2471002213.

It is an arithmetic number, because the mean of its divisors is an integer number (16656874488009).

Almost surely, 2^{111021120100105} is an apocalyptic number.

It is an amenable number.

111021120100105 is a deficient number, since it is larger than the sum of its proper divisors (22233875803967).

111021120100105 is an equidigital number, since it uses as much as digits as its factorization.

111021120100105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4941963995.

The product of its (nonzero) digits is 20, while the sum is 16.

Adding to 111021120100105 its reverse (501001021120111), we get a palindrome (612022141220216).

The spelling of 111021120100105 in words is "one hundred eleven trillion, twenty-one billion, one hundred twenty million, one hundred thousand, one hundred five".