22040012321 has 8 divisors (see below), whose sum is σ = 23656162824. Its totient is φ = 20459381760.

The previous prime is 22040012299. The next prime is 22040012327. The reversal of 22040012321 is 12321004022.

It can be written as a sum of positive squares in 4 ways, for example, as 8592363025 + 13447649296 = 92695^2 + 115964^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22040012321 - 2¹⁸ = 22039750177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22040012321.

It is not an unprimeable number, because it can be changed into a prime (22040012327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8878700 + ... + 8881181.

It is an arithmetic number, because the mean of its divisors is an integer number (2957020353).

Almost surely, 2^22040012321 is an apocalyptic number.

It is an amenable number.

22040012321 is a deficient number, since it is larger than the sum of its proper divisors (1616150503).

22040012321 is a wasteful number, since it uses less digits than its factorization.

22040012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17759971.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22040012321 its reverse (12321004022), we get a palindrome (34361016343).

The spelling of 22040012321 in words is "twenty-two billion, forty million, twelve thousand, three hundred twenty-one".