221222000011 has 4 divisors (see below), whose sum is σ = 221443888672. Its totient is φ = 221000111352.

The previous prime is 221221999987. The next prime is 221222000047. The reversal of 221222000011 is 110000222122.

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 221222000011 - 2¹¹ = 221221997963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221221999955 and 221222000000.

It is not an unprimeable number, because it can be changed into a prime (221222000071) 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, 110942835 + ... + 110944828.

It is an arithmetic number, because the mean of its divisors is an integer number (55360972168).

Almost surely, 2^221222000011 is an apocalyptic number.

221222000011 is a deficient number, since it is larger than the sum of its proper divisors (221888661).

221222000011 is an equidigital number, since it uses as much as digits as its factorization.

221222000011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221888660.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221222000011 its reverse (110000222122), we get a palindrome (331222222133).

The spelling of 221222000011 in words is "two hundred twenty-one billion, two hundred twenty-two million, eleven", and thus it is an aban number.