22120209938917 has 2 divisors, whose sum is σ = 22120209938918. Its totient is φ = 22120209938916.

The previous prime is 22120209938909. The next prime is 22120209938933. The reversal of 22120209938917 is 71983990202122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21781766404836 + 338443534081 = 4667094^2 + 581759^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120209938917 - 2³ = 22120209938909 is a prime.

It is a super-2 number, since 2×22120209938917² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22120209938977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060104969458 + 11060104969459.

It is an arithmetic number, because the mean of its divisors is an integer number (11060104969459).

Almost surely, 2^{22120209938917} is an apocalyptic number.

It is an amenable number.

22120209938917 is a deficient number, since it is larger than the sum of its proper divisors (1).

22120209938917 is an equidigital number, since it uses as much as digits as its factorization.

22120209938917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 22120209938917 in words is "twenty-two trillion, one hundred twenty billion, two hundred nine million, nine hundred thirty-eight thousand, nine hundred seventeen".