22025330421521 has 16 divisors (see below), whose sum is σ = 25758044661888. Its totient is φ = 18439204694400.

The previous prime is 22025330421511. The next prime is 22025330421547. The reversal of 22025330421521 is 12512403352022.

It is not a de Polignac number, because 22025330421521 - 2¹⁰ = 22025330420497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22025330421511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8076461 + ... + 10453701.

It is an arithmetic number, because the mean of its divisors is an integer number (1609877791368).

Almost surely, 2^{22025330421521} is an apocalyptic number.

It is an amenable number.

22025330421521 is a deficient number, since it is larger than the sum of its proper divisors (3732714240367).

22025330421521 is a wasteful number, since it uses less digits than its factorization.

22025330421521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408072.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 22025330421521 its reverse (12512403352022), we get a palindrome (34537733773543).

The spelling of 22025330421521 in words is "twenty-two trillion, twenty-five billion, three hundred thirty million, four hundred twenty-one thousand, five hundred twenty-one".