22217439149 has 2 divisors, whose sum is σ = 22217439150. Its totient is φ = 22217439148.

The previous prime is 22217439131. The next prime is 22217439151. The reversal of 22217439149 is 94193471222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15099985924 + 7117453225 = 122882^2 + 84365^2 .

It is a cyclic number.

It is not a de Polignac number, because 22217439149 - 2¹⁶ = 22217373613 is a prime.

It is a super-2 number, since 2×22217439149² (a number of 21 digits) contains 22 as substring.

Together with 22217439151, 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 (22217439169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11108719574 + 11108719575.

It is an arithmetic number, because the mean of its divisors is an integer number (11108719575).

Almost surely, 2^22217439149 is an apocalyptic number.

It is an amenable number.

22217439149 is a deficient number, since it is larger than the sum of its proper divisors (1).

22217439149 is an equidigital number, since it uses as much as digits as its factorization.

22217439149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The spelling of 22217439149 in words is "twenty-two billion, two hundred seventeen million, four hundred thirty-nine thousand, one hundred forty-nine".