111000201200021 has 16 divisors (see below), whose sum is σ = 129030929664000. Its totient is φ = 93524382574128.

The previous prime is 111000201199999. The next prime is 111000201200089. The reversal of 111000201200021 is 120002102000111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111000201200021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111000201199975 and 111000201200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000201200921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479910161 + ... + 480141398.

It is an arithmetic number, because the mean of its divisors is an integer number (8064433104000).

Almost surely, 2^{111000201200021} is an apocalyptic number.

It is an amenable number.

111000201200021 is a deficient number, since it is larger than the sum of its proper divisors (18030728463979).

111000201200021 is an equidigital number, since it uses as much as digits as its factorization.

111000201200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960051848.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111000201200021 its reverse (120002102000111), we get a palindrome (231002303200132).

The spelling of 111000201200021 in words is "one hundred eleven trillion, two hundred one million, two hundred thousand, twenty-one".