22444140155321 has 4 divisors (see below), whose sum is σ = 22444425888144. Its totient is φ = 22443854422500.

The previous prime is 22444140155273. The next prime is 22444140155323. The reversal of 22444140155321 is 12355104144422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22444140155321 - 2¹⁰ = 22444140154297 is a prime.

It is a super-2 number, since 2×22444140155321² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22444140155323) 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, 142748555 + ... + 142905696.

It is an arithmetic number, because the mean of its divisors is an integer number (5611106472036).

Almost surely, 2^{22444140155321} is an apocalyptic number.

It is an amenable number.

22444140155321 is a deficient number, since it is larger than the sum of its proper divisors (285732823).

22444140155321 is an equidigital number, since it uses as much as digits as its factorization.

22444140155321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285732822.

The product of its (nonzero) digits is 153600, while the sum is 38.

Adding to 22444140155321 its reverse (12355104144422), we get a palindrome (34799244299743).

The spelling of 22444140155321 in words is "twenty-two trillion, four hundred forty-four billion, one hundred forty million, one hundred fifty-five thousand, three hundred twenty-one".