1222000001111 has 4 divisors (see below), whose sum is σ = 1250418605832. Its totient is φ = 1193581396392.

The previous prime is 1222000001087. The next prime is 1222000001219. The reversal of 1222000001111 is 1111000002221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222000001111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222000001092 and 1222000001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222000001611) 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, 14209302296 + ... + 14209302381.

It is an arithmetic number, because the mean of its divisors is an integer number (312604651458).

Almost surely, 2^{1222000001111} is an apocalyptic number.

1222000001111 is a deficient number, since it is larger than the sum of its proper divisors (28418604721).

1222000001111 is an equidigital number, since it uses as much as digits as its factorization.

1222000001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28418604720.

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

Adding to 1222000001111 its reverse (1111000002221), we get a palindrome (2333000003332).

The spelling of 1222000001111 in words is "one trillion, two hundred twenty-two billion, one thousand, one hundred eleven".