22020112122221 has 16 divisors (see below), whose sum is σ = 23720263630848. Its totient is φ = 20381945430000.

The previous prime is 22020112122167. The next prime is 22020112122223. The reversal of 22020112122221 is 12222121102022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22020112122221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22020112122193 and 22020112122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020112122223) 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, 10029596 + ... + 12026346.

It is an arithmetic number, because the mean of its divisors is an integer number (1482516476928).

Almost surely, 2^{22020112122221} is an apocalyptic number.

It is an amenable number.

22020112122221 is a deficient number, since it is larger than the sum of its proper divisors (1700151508627).

22020112122221 is a wasteful number, since it uses less digits than its factorization.

22020112122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012272.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22020112122221 its reverse (12222121102022), we get a palindrome (34242233224243).

The spelling of 22020112122221 in words is "twenty-two trillion, twenty billion, one hundred twelve million, one hundred twenty-two thousand, two hundred twenty-one".