111222111002001 has 8 divisors (see below), whose sum is σ = 148311294211584. Its totient is φ = 74140500896880.

The previous prime is 111222111001979. The next prime is 111222111002063. The reversal of 111222111002001 is 100200111222111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111222111002001 - 2²³ = 111222102613393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111222111003001) 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, 1893241846 + ... + 1893300591.

It is an arithmetic number, because the mean of its divisors is an integer number (18538911776448).

Almost surely, 2^{111222111002001} is an apocalyptic number.

It is an amenable number.

111222111002001 is a deficient number, since it is larger than the sum of its proper divisors (37089183209583).

111222111002001 is an equidigital number, since it uses as much as digits as its factorization.

111222111002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3786552231.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111222111002001 its reverse (100200111222111), we get a palindrome (211422222224112).

The spelling of 111222111002001 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred eleven million, two thousand, one".