22145208247 has 2 divisors, whose sum is σ = 22145208248. Its totient is φ = 22145208246.

The previous prime is 22145208233. The next prime is 22145208251. The reversal of 22145208247 is 74280254122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22145208247 - 2⁷ = 22145208119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22145208227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11072604123 + 11072604124.

It is an arithmetic number, because the mean of its divisors is an integer number (11072604124).

Almost surely, 2^22145208247 is an apocalyptic number.

22145208247 is a deficient number, since it is larger than the sum of its proper divisors (1).

22145208247 is an equidigital number, since it uses as much as digits as its factorization.

22145208247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71680, while the sum is 37.

The spelling of 22145208247 in words is "twenty-two billion, one hundred forty-five million, two hundred eight thousand, two hundred forty-seven".