22043121867 has 20 divisors (see below), whose sum is σ = 35461586160. Its totient is φ = 13564997424.

The previous prime is 22043121853. The next prime is 22043121883. The reversal of 22043121867 is 76812134022.

It is a happy number.

22043121867 is a `hidden beast` number, since 2 + 2 + 0 + 431 + 218 + 6 + 7 = 666.

It is not a de Polignac number, because 22043121867 - 2⁴ = 22043121851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22043121767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10465767 + ... + 10467872.

It is an arithmetic number, because the mean of its divisors is an integer number (1773079308).

Almost surely, 2^22043121867 is an apocalyptic number.

22043121867 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22043121867 is a deficient number, since it is larger than the sum of its proper divisors (13418464293).

22043121867 is a wasteful number, since it uses less digits than its factorization.

22043121867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20933664 (or 20933655 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

Adding to 22043121867 its reverse (76812134022), we get a palindrome (98855255889).

The spelling of 22043121867 in words is "twenty-two billion, forty-three million, one hundred twenty-one thousand, eight hundred sixty-seven".