111222021100001 has 32 divisors (see below), whose sum is σ = 129898879123968. Its totient is φ = 93264504053760.

The previous prime is 111222021099983. The next prime is 111222021100007. The reversal of 111222021100001 is 100001120222111.

It is a cyclic number.

It is not a de Polignac number, because 111222021100001 - 2³⁸ = 110947143193057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111222021100007) 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 31 ways as a sum of consecutive naturals, for example, 84969041 + ... + 86268081.

It is an arithmetic number, because the mean of its divisors is an integer number (4059339972624).

Almost surely, 2^{111222021100001} is an apocalyptic number.

It is an amenable number.

111222021100001 is a deficient number, since it is larger than the sum of its proper divisors (18676858023967).

111222021100001 is a wasteful number, since it uses less digits than its factorization.

111222021100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300481.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111222021100001 its reverse (100001120222111), we get a palindrome (211223141322112).

The spelling of 111222021100001 in words is "one hundred eleven trillion, two hundred twenty-two billion, twenty-one million, one hundred thousand, one".