111001210102001 has 4 divisors (see below), whose sum is σ = 111048626255604. Its totient is φ = 110953793948400.

The previous prime is 111001210101989. The next prime is 111001210102067. The reversal of 111001210102001 is 100201012100111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74279852267776 + 36721357834225 = 8618576^2 + 6059815^2 .

It is a cyclic number.

It is not a de Polignac number, because 111001210102001 - 2⁴² = 106603163590897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111001210102091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23708073290 + ... + 23708077971.

It is an arithmetic number, because the mean of its divisors is an integer number (27762156563901).

Almost surely, 2^{111001210102001} is an apocalyptic number.

It is an amenable number.

111001210102001 is a deficient number, since it is larger than the sum of its proper divisors (47416153603).

111001210102001 is an equidigital number, since it uses as much as digits as its factorization.

111001210102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47416153602.

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

Adding to 111001210102001 its reverse (100201012100111), we get a palindrome (211202222202112).

The spelling of 111001210102001 in words is "one hundred eleven trillion, one billion, two hundred ten million, one hundred two thousand, one".