111100001120021 has 8 divisors (see below), whose sum is σ = 111685017512640. Its totient is φ = 110515081312512.

The previous prime is 111100001119967. The next prime is 111100001120023. The reversal of 111100001120021 is 120021100001111.

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

It is a cyclic number.

It is not a de Polignac number, because 111100001120021 - 2¹⁸ = 111100000857877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111100001119984 and 111100001120011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100001120023) 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, 21839081 + ... + 26441358.

It is an arithmetic number, because the mean of its divisors is an integer number (13960627189080).

Almost surely, 2^{111100001120021} is an apocalyptic number.

It is an amenable number.

111100001120021 is a deficient number, since it is larger than the sum of its proper divisors (585016392619).

111100001120021 is a wasteful number, since it uses less digits than its factorization.

111100001120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48292555.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111100001120021 its reverse (120021100001111), we get a palindrome (231121101121132).

The spelling of 111100001120021 in words is "one hundred eleven trillion, one hundred billion, one million, one hundred twenty thousand, twenty-one".