111100222222001 has 4 divisors (see below), whose sum is σ = 111899504396400. Its totient is φ = 110300940047604.

The previous prime is 111100222221899. The next prime is 111100222222103. The reversal of 111100222222001 is 100222222001111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (111100222221899) and next prime (111100222222103).

It is a cyclic number.

It is not a de Polignac number, because 111100222222001 - 2⁴⁶ = 40731478044337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111100222224001) 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 3 ways as a sum of consecutive naturals, for example, 399641086991 + ... + 399641087268.

It is an arithmetic number, because the mean of its divisors is an integer number (27974876099100).

Almost surely, 2^{111100222222001} is an apocalyptic number.

It is an amenable number.

111100222222001 is a deficient number, since it is larger than the sum of its proper divisors (799282174399).

111100222222001 is an equidigital number, since it uses as much as digits as its factorization.

111100222222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799282174398.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111100222222001 its reverse (100222222001111), we get a palindrome (211322444223112).

It can be divided in two parts, 111 and 100222222001, that multiplied together give a palindrome (11124666642111).

The spelling of 111100222222001 in words is "one hundred eleven trillion, one hundred billion, two hundred twenty-two million, two hundred twenty-two thousand, one".