111222100001 has 4 divisors (see below), whose sum is σ = 113107220400. Its totient is φ = 109336979604.

The previous prime is 111222099997. The next prime is 111222100019. The reversal of 111222100001 is 100001222111.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100001222111 = 7 ⋅14285888873.

It is a cyclic number.

It is not a de Polignac number, because 111222100001 - 2² = 111222099997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111222100061) 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, 942560111 + ... + 942560228.

It is an arithmetic number, because the mean of its divisors is an integer number (28276805100).

Almost surely, 2^111222100001 is an apocalyptic number.

It is an amenable number.

111222100001 is a deficient number, since it is larger than the sum of its proper divisors (1885120399).

111222100001 is an equidigital number, since it uses as much as digits as its factorization.

111222100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885120398.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111222100001 its reverse (100001222111), we get a palindrome (211223322112).

The spelling of 111222100001 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred thousand, one".