1222021100111 has 8 divisors (see below), whose sum is σ = 1398170065920. Its totient is φ = 1046265765048.

The previous prime is 1222021100089. The next prime is 1222021100123. The reversal of 1222021100111 is 1110011202221.

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

It is not a de Polignac number, because 1222021100111 - 2³⁴ = 1204841230927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222021100141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98401031 + ... + 98413448.

It is an arithmetic number, because the mean of its divisors is an integer number (174771258240).

Almost surely, 2^{1222021100111} is an apocalyptic number.

1222021100111 is a deficient number, since it is larger than the sum of its proper divisors (176148965809).

1222021100111 is an equidigital number, since it uses as much as digits as its factorization.

1222021100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196815373.

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

Adding to 1222021100111 its reverse (1110011202221), we get a palindrome (2332032302332).

The spelling of 1222021100111 in words is "one trillion, two hundred twenty-two billion, twenty-one million, one hundred thousand, one hundred eleven".