18223141147201 has 4 divisors (see below), whose sum is σ = 18262670738004. Its totient is φ = 18183611556400.

The previous prime is 18223141147193. The next prime is 18223141147213. The reversal of 18223141147201 is 10274114132281.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6611069440000 + 11612071707201 = 2571200^2 + 3407649^2 .

It is a cyclic number.

It is not a de Polignac number, because 18223141147201 - 2³ = 18223141147193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18223141147231) 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, 19764794710 + ... + 19764795631.

It is an arithmetic number, because the mean of its divisors is an integer number (4565667684501).

Almost surely, 2^{18223141147201} is an apocalyptic number.

It is an amenable number.

18223141147201 is a deficient number, since it is larger than the sum of its proper divisors (39529590803).

18223141147201 is an equidigital number, since it uses as much as digits as its factorization.

18223141147201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39529590802.

The product of its (nonzero) digits is 21504, while the sum is 37.

Adding to 18223141147201 its reverse (10274114132281), we get a palindrome (28497255279482).

The spelling of 18223141147201 in words is "eighteen trillion, two hundred twenty-three billion, one hundred forty-one million, one hundred forty-seven thousand, two hundred one".