22040323140221 has 2 divisors, whose sum is σ = 22040323140222. Its totient is φ = 22040323140220.

The previous prime is 22040323140193. The next prime is 22040323140263. The reversal of 22040323140221 is 12204132304022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18707233934596 + 3333089205625 = 4325186^2 + 1825675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22040323140221 is a prime.

It is a super-2 number, since 2×22040323140221² (a number of 27 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 (22040323140821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11020161570110 + 11020161570111.

It is an arithmetic number, because the mean of its divisors is an integer number (11020161570111).

Almost surely, 2^{22040323140221} is an apocalyptic number.

It is an amenable number.

22040323140221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22040323140221 is an equidigital number, since it uses as much as digits as its factorization.

22040323140221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 22040323140221 its reverse (12204132304022), we get a palindrome (34244455444243).

The spelling of 22040323140221 in words is "twenty-two trillion, forty billion, three hundred twenty-three million, one hundred forty thousand, two hundred twenty-one".