22521432121321 has 32 divisors (see below), whose sum is σ = 26880541890048. Its totient is φ = 18449186849280.

The previous prime is 22521432121301. The next prime is 22521432121333. The reversal of 22521432121321 is 12312123412522.

It is a cyclic number.

It is not a de Polignac number, because 22521432121321 - 2¹⁷ = 22521431990249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22521432121301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1366832335 + ... + 1366848811.

It is an arithmetic number, because the mean of its divisors is an integer number (840016934064).

Almost surely, 2^{22521432121321} is an apocalyptic number.

It is an amenable number.

22521432121321 is a deficient number, since it is larger than the sum of its proper divisors (4359109768727).

22521432121321 is a wasteful number, since it uses less digits than its factorization.

22521432121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23161.

The product of its digits is 11520, while the sum is 31.

Adding to 22521432121321 its reverse (12312123412522), we get a palindrome (34833555533843).

The spelling of 22521432121321 in words is "twenty-two trillion, five hundred twenty-one billion, four hundred thirty-two million, one hundred twenty-one thousand, three hundred twenty-one".