22138100547 has 4 divisors (see below), whose sum is σ = 29517467400. Its totient is φ = 14758733696.

The previous prime is 22138100539. The next prime is 22138100561. The reversal of 22138100547 is 74500183122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22138100547 - 2³ = 22138100539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22138120547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3689683422 + ... + 3689683427.

It is an arithmetic number, because the mean of its divisors is an integer number (7379366850).

Almost surely, 2^22138100547 is an apocalyptic number.

22138100547 is a deficient number, since it is larger than the sum of its proper divisors (7379366853).

22138100547 is an equidigital number, since it uses as much as digits as its factorization.

22138100547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7379366852.

The product of its (nonzero) digits is 13440, while the sum is 33.

Adding to 22138100547 its reverse (74500183122), we get a palindrome (96638283669).

The spelling of 22138100547 in words is "twenty-two billion, one hundred thirty-eight million, one hundred thousand, five hundred forty-seven".