11210122221221 has 16 divisors (see below), whose sum is σ = 14114635060608. Its totient is φ = 8648673432000.

The previous prime is 11210122221209. The next prime is 11210122221241. The reversal of 11210122221221 is 12212222101211.

It is a de Polignac number, because none of the positive numbers 2^k-11210122221221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11210122221193 and 11210122221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210122221241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720715010 + ... + 720730563.

It is an arithmetic number, because the mean of its divisors is an integer number (882164691288).

Almost surely, 2^{11210122221221} is an apocalyptic number.

11210122221221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11210122221221 is a deficient number, since it is larger than the sum of its proper divisors (2904512839387).

11210122221221 is a wasteful number, since it uses less digits than its factorization.

11210122221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441445692.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11210122221221 its reverse (12212222101211), we get a palindrome (23422344322432).

It can be divided in two parts, 112101 and 22221221, that added together give a palindrome (22333322).

The spelling of 11210122221221 in words is "eleven trillion, two hundred ten billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-one".