22120002173 has 2 divisors, whose sum is σ = 22120002174. Its totient is φ = 22120002172.

The previous prime is 22120002119. The next prime is 22120002181. The reversal of 22120002173 is 37120002122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20335615609 + 1784386564 = 142603^2 + 42242^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22120002173 is a prime.

It is a super-2 number, since 2×22120002173² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22120002193) 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 as a sum of consecutive naturals, namely, 11060001086 + 11060001087.

It is an arithmetic number, because the mean of its divisors is an integer number (11060001087).

Almost surely, 2^22120002173 is an apocalyptic number.

It is an amenable number.

22120002173 is a deficient number, since it is larger than the sum of its proper divisors (1).

22120002173 is an equidigital number, since it uses as much as digits as its factorization.

22120002173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 22120002173 its reverse (37120002122), we get a palindrome (59240004295).

The spelling of 22120002173 in words is "twenty-two billion, one hundred twenty million, two thousand, one hundred seventy-three".