22145212373 has 2 divisors, whose sum is σ = 22145212374. Its totient is φ = 22145212372.

The previous prime is 22145212273. The next prime is 22145212391. The reversal of 22145212373 is 37321254122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21474557764 + 670654609 = 146542^2 + 25897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22145212373 is a prime.

It is a super-2 number, since 2×22145212373² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22145212393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11072606186 + 11072606187.

It is an arithmetic number, because the mean of its divisors is an integer number (11072606187).

Almost surely, 2^22145212373 is an apocalyptic number.

It is an amenable number.

22145212373 is a deficient number, since it is larger than the sum of its proper divisors (1).

22145212373 is an equidigital number, since it uses as much as digits as its factorization.

22145212373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 32.

Adding to 22145212373 its reverse (37321254122), we get a palindrome (59466466495).

The spelling of 22145212373 in words is "twenty-two billion, one hundred forty-five million, two hundred twelve thousand, three hundred seventy-three".