22120022220221 has 16 divisors (see below), whose sum is σ = 22636554554880. Its totient is φ = 21605407843200.

The previous prime is 22120022220193. The next prime is 22120022220223. The reversal of 22120022220221 is 12202222002122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22120022220221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22120022220193 and 22120022220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120022220223) 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, 611860496 + ... + 611896646.

It is an arithmetic number, because the mean of its divisors is an integer number (1414784659680).

Almost surely, 2^{22120022220221} is an apocalyptic number.

It is an amenable number.

22120022220221 is a deficient number, since it is larger than the sum of its proper divisors (516532334659).

22120022220221 is a wasteful number, since it uses less digits than its factorization.

22120022220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62284.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22120022220221 its reverse (12202222002122), we get a palindrome (34322244222343).

The spelling of 22120022220221 in words is "twenty-two trillion, one hundred twenty billion, twenty-two million, two hundred twenty thousand, two hundred twenty-one".