111001002222001 has 4 divisors (see below), whose sum is σ = 111983311976292. Its totient is φ = 110018692467712.

The previous prime is 111001002221897. The next prime is 111001002222029. The reversal of 111001002222001 is 100222200100111.

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 9705312162225 + 101295690059776 = 3115335^2 + 10064576^2 .

It is a cyclic number.

It is not a de Polignac number, because 111001002222001 - 2¹¹ = 111001002219953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111001002222041) 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, 491154876976 + ... + 491154877201.

It is an arithmetic number, because the mean of its divisors is an integer number (27995827994073).

Almost surely, 2^{111001002222001} is an apocalyptic number.

It is an amenable number.

111001002222001 is a deficient number, since it is larger than the sum of its proper divisors (982309754291).

111001002222001 is an equidigital number, since it uses as much as digits as its factorization.

111001002222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982309754290.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111001002222001 its reverse (100222200100111), we get a palindrome (211223202322112).

The spelling of 111001002222001 in words is "one hundred eleven trillion, one billion, two million, two hundred twenty-two thousand, one".