22012102221221 has 32 divisors (see below), whose sum is σ = 25868480741376. Its totient is φ = 18337196016000.

The previous prime is 22012102221163. The next prime is 22012102221247. The reversal of 22012102221221 is 12212220121022.

It is a cyclic number.

It is not a de Polignac number, because 22012102221221 - 2²⁶ = 22012035112357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22012102221193 and 22012102221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012102220221) 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 31 ways as a sum of consecutive naturals, for example, 1099990106 + ... + 1100010116.

It is an arithmetic number, because the mean of its divisors is an integer number (808390023168).

Almost surely, 2^{22012102221221} is an apocalyptic number.

It is an amenable number.

22012102221221 is a deficient number, since it is larger than the sum of its proper divisors (3856378520155).

22012102221221 is a wasteful number, since it uses less digits than its factorization.

22012102221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34473.

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

Adding to 22012102221221 its reverse (12212220121022), we get a palindrome (34224322342243).

The spelling of 22012102221221 in words is "twenty-two trillion, twelve billion, one hundred two million, two hundred twenty-one thousand, two hundred twenty-one".