221102123320 has 32 divisors (see below), whose sum is σ = 535747453920. Its totient is φ = 81637706880.

The previous prime is 221102123311. The next prime is 221102123339. The reversal of 221102123320 is 23321201122.

It is a super-2 number, since 2×221102123320² (a number of 23 digits) contains 22 as substring.

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, 212597676 + ... + 212598715.

It is an arithmetic number, because the mean of its divisors is an integer number (16742107935).

Almost surely, 2^221102123320 is an apocalyptic number.

221102123320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221102123320 is an abundant number, since it is smaller than the sum of its proper divisors (314645330600).

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

221102123320 is a wasteful number, since it uses less digits than its factorization.

221102123320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425196415 (or 425196411 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 221102123320 its reverse (23321201122), we get a palindrome (244423324442).

The spelling of 221102123320 in words is "two hundred twenty-one billion, one hundred two million, one hundred twenty-three thousand, three hundred twenty".