221011110010220 has 24 divisors (see below), whose sum is σ = 466553296113408. Its totient is φ = 87941593510400.

The previous prime is 221011110010183. The next prime is 221011110010261. The reversal of 221011110010220 is 22010011110122.

It is a junction number, because it is equal to n+sod(n) for n = 221011110010195 and 221011110010204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28928151941 + ... + 28928159580.

It is an arithmetic number, because the mean of its divisors is an integer number (19439720671392).

Almost surely, 2^{221011110010220} is an apocalyptic number.

221011110010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221011110010220 is an abundant number, since it is smaller than the sum of its proper divisors (245542186103188).

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

221011110010220 is a wasteful number, since it uses less digits than its factorization.

221011110010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57856311721 (or 57856311719 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221011110010220 its reverse (22010011110122), we get a palindrome (243021121120342).

The spelling of 221011110010220 in words is "two hundred twenty-one trillion, eleven billion, one hundred ten million, ten thousand, two hundred twenty".