111001210200121 has 8 divisors (see below), whose sum is σ = 111451225203144. Its totient is φ = 110552051554560.

The previous prime is 111001210200079. The next prime is 111001210200149. The reversal of 111001210200121 is 121002012100111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2626551800896 + 108374658399225 = 1620664^2 + 10410315^2 .

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 111001210200121 - 2⁴¹ = 108802186944569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111001210204121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213829600 + ... + 214348081.

It is an arithmetic number, because the mean of its divisors is an integer number (13931403150393).

Almost surely, 2^{111001210200121} is an apocalyptic number.

It is an amenable number.

111001210200121 is a deficient number, since it is larger than the sum of its proper divisors (450015003023).

111001210200121 is an equidigital number, since it uses as much as digits as its factorization.

111001210200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428178731.

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

Adding to 111001210200121 its reverse (121002012100111), we get a palindrome (232003222300232).

The spelling of 111001210200121 in words is "one hundred eleven trillion, one billion, two hundred ten million, two hundred thousand, one hundred twenty-one".