111000010100021 has 8 divisors (see below), whose sum is σ = 126858290673984. Its totient is φ = 95142013594560.

The previous prime is 111000010099997. The next prime is 111000010100039. The reversal of 111000010100021 is 120001010000111.

It is a happy number.

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 111000010100021 - 2¹⁰ = 111000010098997 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 = 111000010099981 and 111000010100008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000010102021) 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, 70179140 + ... + 71743373.

It is an arithmetic number, because the mean of its divisors is an integer number (15857286334248).

Almost surely, 2^{111000010100021} is an apocalyptic number.

It is an amenable number.

111000010100021 is a deficient number, since it is larger than the sum of its proper divisors (15858280573963).

111000010100021 is a wasteful number, since it uses less digits than its factorization.

111000010100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142034251.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 111000010100021 its reverse (120001010000111), we get a palindrome (231001020100132).

The spelling of 111000010100021 in words is "one hundred eleven trillion, ten million, one hundred thousand, twenty-one".