221222402011 has 8 divisors (see below), whose sum is σ = 238280787360. Its totient is φ = 204169913472.

The previous prime is 221222401997. The next prime is 221222402017. The reversal of 221222402011 is 110204222122.

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

It is a cyclic number.

It is not a de Polignac number, because 221222402011 - 2¹⁷ = 221222270939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221222402011.

It is not an unprimeable number, because it can be changed into a prime (221222402017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1396126 + ... + 1546483.

It is an arithmetic number, because the mean of its divisors is an integer number (29785098420).

Almost surely, 2^221222402011 is an apocalyptic number.

221222402011 is a deficient number, since it is larger than the sum of its proper divisors (17058385349).

221222402011 is a wasteful number, since it uses less digits than its factorization.

221222402011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2948405.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221222402011 its reverse (110204222122), we get a palindrome (331426624133).

The spelling of 221222402011 in words is "two hundred twenty-one billion, two hundred twenty-two million, four hundred two thousand, eleven".