22145121531321 has 16 divisors (see below), whose sum is σ = 30811466050560. Its totient is φ = 14121131607440.

The previous prime is 22145121531259. The next prime is 22145121531349. The reversal of 22145121531321 is 12313512154122.

It is a cyclic number.

It is not a de Polignac number, because 22145121531321 - 2¹⁷ = 22145121400249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22145121535321) 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 15 ways as a sum of consecutive naturals, for example, 1996935 + ... + 6948236.

It is an arithmetic number, because the mean of its divisors is an integer number (1925716628160).

Almost surely, 2^{22145121531321} is an apocalyptic number.

It is an amenable number.

22145121531321 is a deficient number, since it is larger than the sum of its proper divisors (8666344519239).

22145121531321 is a wasteful number, since it uses less digits than its factorization.

22145121531321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8981076.

The product of its digits is 14400, while the sum is 33.

Adding to 22145121531321 its reverse (12313512154122), we get a palindrome (34458633685443).

The spelling of 22145121531321 in words is "twenty-two trillion, one hundred forty-five billion, one hundred twenty-one million, five hundred thirty-one thousand, three hundred twenty-one".