221122202312320 has 64 divisors (see below), whose sum is σ = 532423288605600. Its totient is φ = 87812558005248.

The previous prime is 221122202312311. The next prime is 221122202312461. The reversal of 221122202312320 is 23213202221122.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1242729174 + ... + 1242907093.

Almost surely, 2^{221122202312320} is an apocalyptic number.

221122202312320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221122202312320 is an abundant number, since it is smaller than the sum of its proper divisors (311301086293280).

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

221122202312320 is a wasteful number, since it uses less digits than its factorization.

221122202312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485636425 (or 2485636413 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 221122202312320 its reverse (23213202221122), we get a palindrome (244335404533442).

The spelling of 221122202312320 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, two hundred two million, three hundred twelve thousand, three hundred twenty".