221011223120320 has 56 divisors (see below), whose sum is σ = 527872954084848. Its totient is φ = 88137406156800.

The previous prime is 221011223120257. The next prime is 221011223120399. The reversal of 221011223120320 is 23021322110122.

It is a junction number, because it is equal to n+sod(n) for n = 221011223120291 and 221011223120300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043187241 + ... + 1043399080.

Almost surely, 2^{221011223120320} is an apocalyptic number.

221011223120320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221011223120320 is an abundant number, since it is smaller than the sum of its proper divisors (306861730964528).

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

221011223120320 is a wasteful number, since it uses less digits than its factorization.

221011223120320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086586669 (or 2086586659 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 221011223120320 its reverse (23021322110122), we get a palindrome (244032545230442).

The spelling of 221011223120320 in words is "two hundred twenty-one trillion, eleven billion, two hundred twenty-three million, one hundred twenty thousand, three hundred twenty".