1222001111011 has 4 divisors (see below), whose sum is σ = 1223628277024. Its totient is φ = 1220373945000.

The previous prime is 1222001110943. The next prime is 1222001111021. The reversal of 1222001111011 is 1101111002221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1222001111011 - 2²³ = 1221992722403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222001110982 and 1222001111000.

It is not an unprimeable number, because it can be changed into a prime (1222001111021) 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, 813581880 + ... + 813583381.

It is an arithmetic number, because the mean of its divisors is an integer number (305907069256).

Almost surely, 2^{1222001111011} is an apocalyptic number.

1222001111011 is a deficient number, since it is larger than the sum of its proper divisors (1627166013).

1222001111011 is an equidigital number, since it uses as much as digits as its factorization.

1222001111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627166012.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1222001111011 its reverse (1101111002221), we get a palindrome (2323112113232).

The spelling of 1222001111011 in words is "one trillion, two hundred twenty-two billion, one million, one hundred eleven thousand, eleven".