22521321380838 has 16 divisors (see below), whose sum is σ = 51477306013440. Its totient is φ = 6434663251656.

The previous prime is 22521321380837. The next prime is 22521321380869. The reversal of 22521321380838 is 83808312312522.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22521321380837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268110968778 + ... + 268110968861.

It is an arithmetic number, because the mean of its divisors is an integer number (3217331625840).

Almost surely, 2^{22521321380838} is an apocalyptic number.

22521321380838 is an abundant number, since it is smaller than the sum of its proper divisors (28955984632602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22521321380838 is a wasteful number, since it uses less digits than its factorization.

22521321380838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536221937651.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 22521321380838 in words is "twenty-two trillion, five hundred twenty-one billion, three hundred twenty-one million, three hundred eighty thousand, eight hundred thirty-eight".