111211200012001 has 8 divisors (see below), whose sum is σ = 111484103383784. Its totient is φ = 110938338080640.

The previous prime is 111211200011983. The next prime is 111211200012007. The reversal of 111211200012001 is 100210002112111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 848611282401 + 110362588729600 = 921201^2 + 10505360^2 .

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 111211200012001 - 2⁵ = 111211200011969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111211200012007) 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, 4982820 + ... + 15724213.

It is an arithmetic number, because the mean of its divisors is an integer number (13935512922973).

Almost surely, 2^{111211200012001} is an apocalyptic number.

It is an amenable number.

111211200012001 is a deficient number, since it is larger than the sum of its proper divisors (272903371783).

111211200012001 is a wasteful number, since it uses less digits than its factorization.

111211200012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20720211.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111211200012001 its reverse (100210002112111), we get a palindrome (211421202124112).

The spelling of 111211200012001 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred million, twelve thousand, one".