28231222213301 has 2 divisors, whose sum is σ = 28231222213302. Its totient is φ = 28231222213300.

The previous prime is 28231222213279. The next prime is 28231222213303. The reversal of 28231222213301 is 10331222213282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26944923722500 + 1286298490801 = 5190850^2 + 1134151^2 .

It is a cyclic number.

It is not a de Polignac number, because 28231222213301 - 2⁶ = 28231222213237 is a prime.

Together with 28231222213303, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28231222213303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14115611106650 + 14115611106651.

It is an arithmetic number, because the mean of its divisors is an integer number (14115611106651).

Almost surely, 2^{28231222213301} is an apocalyptic number.

It is an amenable number.

28231222213301 is a deficient number, since it is larger than the sum of its proper divisors (1).

28231222213301 is an equidigital number, since it uses as much as digits as its factorization.

28231222213301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 28231222213301 its reverse (10331222213282), we get a palindrome (38562444426583).

The spelling of 28231222213301 in words is "twenty-eight trillion, two hundred thirty-one billion, two hundred twenty-two million, two hundred thirteen thousand, three hundred one".