111120100021 has 8 divisors (see below), whose sum is σ = 128118245184. Its totient is φ = 94402916160.

The previous prime is 111120099997. The next prime is 111120100037. The reversal of 111120100021 is 120001021111.

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

It is not a de Polignac number, because 111120100021 - 2⁵ = 111120099989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111120099980 and 111120100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120104021) 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, 70239475 + ... + 70241056.

It is an arithmetic number, because the mean of its divisors is an integer number (16014780648).

Almost surely, 2^111120100021 is an apocalyptic number.

It is an amenable number.

111120100021 is a deficient number, since it is larger than the sum of its proper divisors (16998145163).

111120100021 is a wasteful number, since it uses less digits than its factorization.

111120100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140480651.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111120100021 its reverse (120001021111), we get a palindrome (231121121132).

The spelling of 111120100021 in words is "one hundred eleven billion, one hundred twenty million, one hundred thousand, twenty-one".