22145212273 has 2 divisors, whose sum is σ = 22145212274. Its totient is φ = 22145212272.

The previous prime is 22145212267. The next prime is 22145212373. The reversal of 22145212273 is 37221254122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20685055329 + 1460156944 = 143823^2 + 38212^2 .

It is a cyclic number.

It is not a de Polignac number, because 22145212273 - 2⁵ = 22145212241 is a prime.

It is not a weakly prime, because it can be changed into another prime (22145212373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11072606136 + 11072606137.

It is an arithmetic number, because the mean of its divisors is an integer number (11072606137).

Almost surely, 2^22145212273 is an apocalyptic number.

It is an amenable number.

22145212273 is a deficient number, since it is larger than the sum of its proper divisors (1).

22145212273 is an equidigital number, since it uses as much as digits as its factorization.

22145212273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 31.

Adding to 22145212273 its reverse (37221254122), we get a palindrome (59366466395).

The spelling of 22145212273 in words is "twenty-two billion, one hundred forty-five million, two hundred twelve thousand, two hundred seventy-three".