22131231322247 has 2 divisors, whose sum is σ = 22131231322248. Its totient is φ = 22131231322246.

The previous prime is 22131231322201. The next prime is 22131231322273. The reversal of 22131231322247 is 74222313213122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22131231322247 - 2²⁶ = 22131164213383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22131230322247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065615661123 + 11065615661124.

It is an arithmetic number, because the mean of its divisors is an integer number (11065615661124).

Almost surely, 2^{22131231322247} is an apocalyptic number.

22131231322247 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131231322247 is an equidigital number, since it uses as much as digits as its factorization.

22131231322247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 35.

Adding to 22131231322247 its reverse (74222313213122), we get a palindrome (96353544535369).

The spelling of 22131231322247 in words is "twenty-two trillion, one hundred thirty-one billion, two hundred thirty-one million, three hundred twenty-two thousand, two hundred forty-seven".