11221221000022 has 16 divisors (see below), whose sum is σ = 19160345740032. Its totient is φ = 4878791738920.

The previous prime is 11221220999971. The next prime is 11221221000029. The reversal of 11221221000022 is 22000012212211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221221000029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11088162538 + ... + 11088163549.

It is an arithmetic number, because the mean of its divisors is an integer number (1197521608752).

Almost surely, 2^{11221221000022} is an apocalyptic number.

11221221000022 is a deficient number, since it is larger than the sum of its proper divisors (7939124740010).

11221221000022 is a wasteful number, since it uses less digits than its factorization.

11221221000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22176326123.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11221221000022 its reverse (22000012212211), we get a palindrome (33221233212233).

The spelling of 11221221000022 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, twenty-two", and thus it is an aban number.